Update lib/api/topics.rb, doc/api/topics.md

doc/api/topics.md

@@ -206,6 +206,8 @@ curl --request PUT \
 
 ## Delete a project topic
 
+> [Introduced](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/80725) in GitLab 14.9.
+
 You must be an administrator to delete a project.
 When you delete a project topic, you also delete the topic assignment for projects.
 

lib/api/topics.rb

@@ -79,7 +79,7 @@ module API
     end
 
     desc 'Delete a topic' do
-      detail 'This feature was introduced in GitLab 14.8.'
+      detail 'This feature was introduced in GitLab 14.9.'
     end
     params do
       requires :id, type: Integer, desc: 'ID of project topic'