Merge branch 'vid-index-branch' into 'master'

Added reduce repository size link for reference

See merge request gitlab-org/gitlab!50315

doc/topics/git/numerous_undo_possibilities_in_git/index.md

@@ -493,6 +493,8 @@ An alternative is the open source community-maintained tool [BFG](https://rtyley
 Keep in mind that these tools are faster because they do not provide the same
 feature set as `git filter-branch` does, but focus on specific use cases.
+Refer [Reduce repository size](../../../user/project/repository/reducing_the_repo_size_using_git.md) page to know more about purging files from repository history & GitLab storage.
+
 ## Conclusion
 There are various options of undoing your work with any version control system, but