Github note: false issue

Setting **note to false** does not remove the Github note on the bottom of every docs:
Found errors? Think you can improve this documentation? Simply click the Edit link at the top of the page, and then the icon on Github to make your changes.

Reproduce:
1. Go to /your/folder/user/themes/learn4
2. Edit learn4.yaml
3. Set it to :
github:
note: **false**
link: true
4. Go to /your/folder/user/config/themes
5. Repeat #2-3

Right now, I just edited /your/folder/user/themes/learn4/templates/docs.html.twig as a workaround.
Maybe I missed something, if so let me know!

Start with learn4.yaml in /your/folder/user/themes/learn4 and /your/folder/user/config/themes, then inspect templates/docs.html.twig, which the reporter used as a workaround. Reproduce the configuration with github.note set to false and github.link set to true. Done means the GitHub note no longer appears at the bottom of documentation pages.

Written by the indexing model from the issue text.