Fixes routes for upcoming deprecation

What does this MR do and why?

• GitLab 16 will deprecate all routes without the /-/ delimeter between project path and desired endpoint
• This commit attempts to locate any call that does this
• While I'm here, this touches a few other places such as:
  • template files which do not make calls but render clickable URL's
  • Documentation
  • VCR tapes that we leverage for specs
• Note that API endpoints are not impacted by this

Addresses: gitlab-com/gl-infra/delivery#2962 (closed)

Describe in detail what your merge request does and why.

Author Check-list

• Has documentation been updated?