doc: clarify adding ctx argument to check command in schema.py On IRC user was unsure what file was used for the 1.51 - 1.60 upgrade section: Enhancement to check command for Permissions added file name desription and example. Also marked it as optional. Clarified that if or when it becomes required there will be a new required upgrade direction.

RedirectMatch 404 /\.buildinfo$
RedirectMatch 404 /docs_backup-.*
RedirectMatch 404 \.orig$
RedirectMatch 404 ~$