Allow custom GitHub URL

[shawnlinxl]

Some companies have self-hosted Github Enterprise instances. It will be great if we can allow people within the organization to edit the documentation through this convenient one-click feature.

[jorisvandenbossche]

Thanks for your contribution!

Can you add a note about this in the docs here: https://pydata-sphinx-theme.readthedocs.io/en/latest/user_guide/configuring.html ?

[shawnlinxl]

Yes, definitely.

[shawnlinxl]

@jorisvandenbossche Sorry, my previous pull request that has been merged actually updated another part of this configuring guide. I am not sure what the correct workflow should be in this case.

I opened another pull request #214 to complete the documentation.

[jorisvandenbossche]

my previous pull request that has been merged actually updated another part of this configuring guide. I am not sure what the correct workflow should be in this case.

The typical workflow it to merge the latest upstream master in this branch, so this branch is updated with those merged changes, and then you can add the docs here.

[jorisvandenbossche]

But will merge it now as the two PRs, thanks again!