GitHub Actions' scheduled workflows only run on the `master` branch.
The `master` branch's scheduled workflow is now configured to build
both the `master` and `stable` branches of the documentation.
This is required to get a permalink using https://nightly.link
as we need the workflow containing the offline docs ZIP artifact
to always be the latest one. Creating a second workflow is a good
way to solve this.
This also makes it easier to distinguish between linting checks
and offline documentation builds in the repository's Actions tab.
Fixes https://github.com/godotengine/godot/issues/42236.
Make codespell skip the Telugu line, otherwise it wants to change `te` to `the`
(I don't want to put it as a global word ignore as it's a common typo.)
