fix readme

Author: Richardk2n

README.rst

@@ -49,6 +49,8 @@ Install development dependencies with (you might want to create a virtualenv fir
 
 The project is formatted with `black`_. You can either configure your IDE to automatically format code with it, run it manually (``black .``) or rely on pre-commit (see below) to format files on git commit.
 
+The project uses two rst tests in order to assure uploadability to pipy: `rst-linter`_ as a pre-commit hook and `rstcheck`_ in a GitHub workflow. This does not catch all errors.
+
 This project uses `pre-commit`_ to enforce code-quality. After cloning the repository install the pre-commit hooks with:
 
 ::
@@ -59,5 +61,6 @@ After that pre-commit will run `all defined hooks`_ on every ``git commit`` and
 
 .. _black: https://github.com/psf/black
 .. _rst-linter: https://github.com/Lucas-C/pre-commit-hooks-markup
+.. _rstcheck: https://github.com/myint/rstcheck
 .. _pre-commit: https://pre-commit.com/
 .. _all defined hooks: .pre-commit-config.yaml