Improve link to GitHub example

content/doc/developer/publishing/wiki-page.adoc

@@ -36,6 +36,11 @@ There are the following migration steps:
 . Modify the URL documentation page reference in the project file so that it points to GitHub (link:/doc/developer/publishing/documentation/#referencing-the-documentation-page-from-the-project-file[documentation]).
 . Commit changes, push them to your fork and create a pull request against the repository.
 
+NOTE: After migration, the continued existence of out-of-date wiki pages causes several problems, such as duplication, confusion, and unclear migration progress.
+This persistence makes it harder to identify which pages have migrated and those waiting for migration.
+If you cannot identify migrated pages, this creates a major technical obstacle in content migration from the wiki.
+When migrating documentation, the out-of-date wiki page must be removed and have a redirect configured to point to the migrated version.
+
 === Reviewing the documentation
 
 . Review/edit the migrated file formatting