Flag that DNS plugins are distributed separately from Certbot (#8479)

* Added note to each DNS documentation index page to mention that plugins need to be installed and are not included as standard.

* Resolved issue with white space in doc files

* Changed wording as discussed in PR.

* Changing URL to new wildcard instructions link

* Update certbot-dns-cloudflare/certbot_dns_cloudflare/__init__.py

certbot-dns-cloudflare/certbot_dns_cloudflare/__init__.py

@@ -3,6 +3,10 @@ The `~certbot_dns_cloudflare.dns_cloudflare` plugin automates the process of
 completing a ``dns-01`` challenge (`~acme.challenges.DNS01`) by creating, and
 subsequently removing, TXT records using the Cloudflare API.
 
+.. note::
+   The plugin is not installed by default. It can be installed by heading to
+   `certbot.eff.org <https://certbot.eff.org/instructions#wildcard>`_, choosing your system and
+   selecting the Wildcard tab.
 
 Named Arguments
 ---------------

certbot-dns-cloudxns/certbot_dns_cloudxns/__init__.py

@@ -3,6 +3,10 @@ The `~certbot_dns_cloudxns.dns_cloudxns` plugin automates the process of
 completing a ``dns-01`` challenge (`~acme.challenges.DNS01`) by creating, and
 subsequently removing, TXT records using the CloudXNS API.
 
+.. note::
+   The plugin is not installed by default. It can be installed by heading to
+   `certbot.eff.org <https://certbot.eff.org/instructions#wildcard>`_, choosing your system and
+   selecting the Wildcard tab.
 
 Named Arguments
 ---------------

certbot-dns-digitalocean/certbot_dns_digitalocean/__init__.py

@@ -3,6 +3,10 @@ The `~certbot_dns_digitalocean.dns_digitalocean` plugin automates the process of
 completing a ``dns-01`` challenge (`~acme.challenges.DNS01`) by creating, and
 subsequently removing, TXT records using the DigitalOcean API.
 
+.. note::
+   The plugin is not installed by default. It can be installed by heading to
+   `certbot.eff.org <https://certbot.eff.org/instructions#wildcard>`_, choosing your system and
+   selecting the Wildcard tab.
 
 Named Arguments
 ---------------

certbot-dns-dnsimple/certbot_dns_dnsimple/__init__.py

@@ -3,6 +3,10 @@ The `~certbot_dns_dnsimple.dns_dnsimple` plugin automates the process of
 completing a ``dns-01`` challenge (`~acme.challenges.DNS01`) by creating, and
 subsequently removing, TXT records using the DNSimple API.
 
+.. note::
+   The plugin is not installed by default. It can be installed by heading to
+   `certbot.eff.org <https://certbot.eff.org/instructions#wildcard>`_, choosing your system and
+   selecting the Wildcard tab.
 
 Named Arguments
 ---------------

certbot-dns-dnsmadeeasy/certbot_dns_dnsmadeeasy/__init__.py

@@ -3,6 +3,10 @@ The `~certbot_dns_dnsmadeeasy.dns_dnsmadeeasy` plugin automates the process of
 completing a ``dns-01`` challenge (`~acme.challenges.DNS01`) by creating, and
 subsequently removing, TXT records using the DNS Made Easy API.
 
+.. note::
+   The plugin is not installed by default. It can be installed by heading to
+   `certbot.eff.org <https://certbot.eff.org/instructions#wildcard>`_, choosing your system and
+   selecting the Wildcard tab.
 
 Named Arguments
 ---------------

certbot-dns-gehirn/certbot_dns_gehirn/__init__.py

@@ -3,6 +3,10 @@ The `~certbot_dns_gehirn.dns_gehirn` plugin automates the process of completing
 a ``dns-01`` challenge (`~acme.challenges.DNS01`) by creating, and subsequently
 removing, TXT records using the Gehirn Infrastructure Service DNS API.
 
+.. note::
+   The plugin is not installed by default. It can be installed by heading to
+   `certbot.eff.org <https://certbot.eff.org/instructions#wildcard>`_, choosing your system and
+   selecting the Wildcard tab.
 
 Named Arguments
 ---------------

certbot-dns-google/certbot_dns_google/__init__.py

@@ -3,6 +3,10 @@ The `~certbot_dns_google.dns_google` plugin automates the process of
 completing a ``dns-01`` challenge (`~acme.challenges.DNS01`) by creating, and
 subsequently removing, TXT records using the Google Cloud DNS API.
 
+.. note::
+   The plugin is not installed by default. It can be installed by heading to
+   `certbot.eff.org <https://certbot.eff.org/instructions#wildcard>`_, choosing your system and
+   selecting the Wildcard tab.
 
 Named Arguments
 ---------------

certbot-dns-linode/certbot_dns_linode/__init__.py

@@ -3,6 +3,10 @@ The `~certbot_dns_linode.dns_linode` plugin automates the process of
 completing a ``dns-01`` challenge (`~acme.challenges.DNS01`) by creating, and
 subsequently removing, TXT records using the Linode API.
 
+.. note::
+   The plugin is not installed by default. It can be installed by heading to
+   `certbot.eff.org <https://certbot.eff.org/instructions#wildcard>`_, choosing your system and
+   selecting the Wildcard tab.
 
 Named Arguments
 ---------------

certbot-dns-luadns/certbot_dns_luadns/__init__.py

@@ -3,6 +3,10 @@ The `~certbot_dns_luadns.dns_luadns` plugin automates the process of
 completing a ``dns-01`` challenge (`~acme.challenges.DNS01`) by creating, and
 subsequently removing, TXT records using the LuaDNS API.
 
+.. note::
+   The plugin is not installed by default. It can be installed by heading to
+   `certbot.eff.org <https://certbot.eff.org/instructions#wildcard>`_, choosing your system and
+   selecting the Wildcard tab.
 
 Named Arguments
 ---------------

certbot-dns-nsone/certbot_dns_nsone/__init__.py

@@ -3,6 +3,10 @@ The `~certbot_dns_nsone.dns_nsone` plugin automates the process of completing
 a ``dns-01`` challenge (`~acme.challenges.DNS01`) by creating, and subsequently
 removing, TXT records using the NS1 API.
 
+.. note::
+   The plugin is not installed by default. It can be installed by heading to
+   `certbot.eff.org <https://certbot.eff.org/instructions#wildcard>`_, choosing your system and
+   selecting the Wildcard tab.
 
 Named Arguments
 ---------------

certbot-dns-ovh/certbot_dns_ovh/__init__.py

@@ -3,6 +3,10 @@ The `~certbot_dns_ovh.dns_ovh` plugin automates the process of
 completing a ``dns-01`` challenge (`~acme.challenges.DNS01`) by creating, and
 subsequently removing, TXT records using the OVH API.
 
+.. note::
+   The plugin is not installed by default. It can be installed by heading to
+   `certbot.eff.org <https://certbot.eff.org/instructions#wildcard>`_, choosing your system and
+   selecting the Wildcard tab.
 
 Named Arguments
 ---------------

certbot-dns-rfc2136/certbot_dns_rfc2136/__init__.py

@@ -3,6 +3,10 @@ The `~certbot_dns_rfc2136.dns_rfc2136` plugin automates the process of
 completing a ``dns-01`` challenge (`~acme.challenges.DNS01`) by creating, and
 subsequently removing, TXT records using RFC 2136 Dynamic Updates.
 
+.. note::
+   The plugin is not installed by default. It can be installed by heading to
+   `certbot.eff.org <https://certbot.eff.org/instructions#wildcard>`_, choosing your system and
+   selecting the Wildcard tab.
 
 Named Arguments
 ---------------

certbot-dns-route53/certbot_dns_route53/__init__.py

@@ -3,6 +3,10 @@ The `~certbot_dns_route53.dns_route53` plugin automates the process of
 completing a ``dns-01`` challenge (`~acme.challenges.DNS01`) by creating, and
 subsequently removing, TXT records using the Amazon Web Services Route 53 API.
 
+.. note::
+   The plugin is not installed by default. It can be installed by heading to
+   `certbot.eff.org <https://certbot.eff.org/instructions#wildcard>`_, choosing your system and
+   selecting the Wildcard tab.
 
 Named Arguments
 ---------------

certbot-dns-sakuracloud/certbot_dns_sakuracloud/__init__.py

@@ -3,6 +3,10 @@ The `~certbot_dns_sakuracloud.dns_sakuracloud` plugin automates the process of c
 a ``dns-01`` challenge (`~acme.challenges.DNS01`) by creating, and subsequently
 removing, TXT records using the Sakura Cloud DNS API.
 
+.. note::
+   The plugin is not installed by default. It can be installed by heading to
+   `certbot.eff.org <https://certbot.eff.org/instructions#wildcard>`_, choosing your system and
+   selecting the Wildcard tab.
 
 Named Arguments
 ---------------