Merge 9acf9ddc75 into ffa67ac1ae

Though the entry point is docs.gotosocial.org, that's redirected by RTD
to docs.gotosocial.org/en/latest/ which is where the actual site is
served from. However, other URLs like docs.gotosocial.org/admin aren't
redirected to docs.gotosocial.org/en/latest/admin. They just 404.

Without us including the /en/latest/ all the generated og:img URLs as
well as the link rel=canonical result in URLs that all 404.

This means that currently the social cards aren't working well, but
indexing the docs site by search engines is probably also partially
broken, since our sitemap.xml is also pointing at things that don't
exist.

README.md

@@ -17,7 +17,7 @@ Documentation is at [docs.gotosocial.org](https://docs.gotosocial.org). You can
 
 To build from source, check the [CONTRIBUTING.md](https://github.com/superseriousbusiness/gotosocial/blob/main/CONTRIBUTING.md) file.
 
-Here's a screenshot of the instance landing page!
+Here's a screenshot of the instance landing page! Check out the project's [official account](https://gts.superseriousbusiness.org/@gotosocial) running on GoToSocial.
 
 ![Screenshot of the landing page for the GoToSocial instance goblin.technology. It shows basic information about the instance; number of users and posts etc.](https://raw.githubusercontent.com/superseriousbusiness/gotosocial/main/docs/overrides/public/instancesplash.png)
 <!--overview-end-->

mkdocs.yml

@@ -1,5 +1,5 @@
 site_name: GoToSocial Documentation
-site_url: https://docs.gotosocial.org
+site_url: https://docs.gotosocial.org/en/latest/
 theme:
   name: material
   language: en