Avoid use special characters in branch name that people copy/paste

Avoid use special characters in branch name that people copy/paste. People sometimes copy <initials>-team-page and push branches that look like <eje>-team-page ❌ instead of eje-team-page ✔. These branches can't be pulled on Windows (\ / : * ? " < > | not allowed in a file name)

Part of #3004 (closed) where you can't pull the repo on Windows because of the special characters.