Add document for sealwrap/rewrap endpoint (#7676)

* Add documentation for seal wrap re-wrap endpoint

* Update sample response for seal rewrap status

* Updates based on feedback from reviewers

website/source/api/system/sealwrap-rewrap.html.md

@@ -0,0 +1,69 @@
+---
+layout: "api"
+page_title: "/sys/sealwrap/rewrap - HTTP API"
+sidebar_title: "<code>/sys/sealwrap/rewrap</code>"
+sidebar_current: "api-http-system-sealwrap-rewrap"
+description: |-
+  The `/sys/sealwrap/rewrap` endpoint is used to rewrap all seal wrapped entries.
+---
+
+# `/sys/sealwrap/rewrap`
+
+~> **Enterprise Only** – These endpoints require Vault Enterprise.
+
+The `/sys/sealwrap/rewrap` endpoint is used to rewrap all seal wrapped entries.
+
+## Read Rewrap Status
+
+This endpoint reports whether a seal rewrap process is currently running.
+
+| Method   | Path                   |
+| :------- | :--------------------- |
+| `GET`    | `/sys/sealwrap/rewrap` |
+
+### Sample Request
+
+```
+$ curl \
+    --header "X-Vault-Token: ..." \
+    http://127.0.0.1:8200/v1/sys/sealwrap/rewrap
+```
+
+### Sample Response
+
+```json
+{
+  "data": {
+    "entries": {
+      "failed": 0,
+      "processed": 30,
+      "succeeded": 30
+    },
+    "is_running": false
+  }
+}
+```
+
+## Start a Seal Rewrap Process
+
+This endpoint starts a seal rewrap process if one is not currently running.
+The process will run in the background. Check the vault server logs for status
+and progress updates.
+
+| Method   | Path                   |
+| :------- | :--------------------- |
+| `POST`   | `/sys/sealwrap/rewrap` |
+
+The default status codes are:
+
+- `200` if a seal rewrap process is already running
+- `204` if a seal rewrap process was started
+
+### Sample Request
+
+```
+$ curl \
+    --header "X-Vault-Token: ..." \
+    --request POST \
+    http://127.0.0.1:8200/v1/sys/sealwrap/rewrap
+```

website/source/layouts/api.erb

@@ -141,6 +141,7 @@
               'rotate',
               'seal',
               'seal-status',
+              'sealwrap-rewrap',
               'step-down',
               {
                 category: 'storage',