Board Thread:Support Requests - Getting Started/@comment-30509676-20170420042538/@comment-24055022-20170420045418

Those titles already exist as redirects. You probably titled a page that and then renamed it but left those as redirects. You would have to delete this and this to be able to rename those pages to those. Future reference, whenever renaming a page, you should always uncheck the "Leave as a redirect" box for reasons exactly like this one.