Retire GitHub pages

[jasonjoh]

• Deleted old docs
• Created custom 404 page pointing users to our new docs page (preview)

[baywet]

Thanks for all your work on that front @jasonjoh QQ: have you reflected the changes of those two PRs in the new location? (I don't think we're changed anything since you moved the content)
#2406
#2451

[jasonjoh]

Thanks for all your work on that front @jasonjoh QQ: have you reflected the changes of those two PRs in the new location? (I don't think we're changed anything since you moved the content) #2406 #2451

Thanks for the reminder! I added these into this PR I'm currently working on:

https://github.com/MicrosoftDocs/openapi-docs-pr/pull/15

[baywet]

Also a bunch of links in the main readme need to be updated.

[jasonjoh]

@baywet I just realized I did not copy over contributing.md to Learn. I'm not sure that content belongs in Learn. How do you feel about adding it back to the root of the repo?

[baywet]

@baywet I just realized I did not copy over contributing.md to Learn. I'm not sure that content belongs in Learn. How do you feel about adding it back to the root of the repo?

@jasonjoh it's usually a section of the readme. I'm not sure why we originally moved it to a separate page. But yes it should be on this repo and at the root. See an example

[jasonjoh]

Yeah, I created a CONTRIBUTING.md and copied the content from the old one. It was more about required and recommended tools, and how to handle the submodule setup.

[baywet]

Thanks for making the changes. I just removed the submodule instructions as we removed the submodule itself, it was generating too much noise