Investigate if we need to add a linter for Read the Docs

[gnikonorov]

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~Read the docs may or may not perform sufficient linting for us. The purpose of this card is to investigate our linting options and add a linter if needed~

I did some research and found that we can still use rst-lint, but we need to allow the following two directives:

• automodule
• toctree

The above can be done via https://github.com/twolfson/restructuredtext-lint#sphinx. I'll try to make a PR for this in the next few days. It will involve a custom script for the docs