This action adds a GitHub Action problem matcher that annotates messages printed by sphinx-lint, making it easier to spot Sphinx syntax errors.

How it shows up in the summary page of a GitHub Action run:

How it shows up in pull requests, in the "Files changed" tab:

Set to use this workflow before running sphinx-lint. For instance:

    - uses: rffontenelle/sphinx-lint-problem-matcher@v1
    - run: sphinx-lint docs/*.rst

Inspired by Sphinx's github-problem-matcher, created by Ammar Askar.