ITS#9644 - Fix ppm module man page name and installation target

contrib/slapd-modules/ppm/Makefile

@@ -59,7 +59,7 @@ TEST=ppm_test
 EXAMPLE=ppm.example
 TESTS=./unit_tests.sh
 
-MANDOC=ppm.5
+MANDOC=slapm-ppm.5
 MDDOC=ppm.md
 
 all: 	ppm $(TEST)
@@ -79,7 +79,7 @@ install: ppm
 		$(LIBTOOL) --mode=install cp $$p $(DESTDIR)/$(moduledir) ; \
 	done
 	$(INSTALL) -m 644 $(EXAMPLE) $(DESTDIR)$(sysconfdir)/
-	$(INSTALL) -m 644 $(MANDOC) $(man5dir)/
+	$(INSTALL) -m 644 $(MANDOC) $(DESTDIR)$(man5dir)/
 #	$(INSTALL) -m 755 $(TEST) $(libdir)
 
 .PHONY: clean