Apply suggestions from code review

Co-authored-by: Karl Kemister-Sheppard <[email protected]>

Author: MitchC1999

modules/ROOT/pages/comments-with-mentions.adoc

@@ -5,7 +5,7 @@
 :pluginname: Comments
 :plugincode: comments
 
-The Comments plugin can be used with the Mentions plugin to allow users to mention other users in comments.
+The Comments plugin can be used with the xref:mentions.adoc[Mentions] plugin to allow users to mention other users in comments.
 
 When a user starts typing a mention with the `+@+` symbol, the mention dropdown will appear. Users can keep typing to narrow the search results, and either click on the desired user or navigate using arrow keys and press enter to add a mention to the comment.