Add Ruff linter and formatter to Python section

Author: jAniceto

README.md

@@ -15,6 +15,7 @@ Below is a list of the most used pages.
 ## Python
 - [Anaconda](programming-notes/python/anaconda.md)
 - [Working with uv](programming-notes/python/uv.md)
+- [Ruff linter and formatter](programming-notes/python/ruff.md)
 - [Simple Machine Learning workflow](programming-notes/python/ml-workflows.md)
 - [Scientific quality figures](programming-notes/python/scientific-figures.md)