Update mathspp/Rodrigo Girao Serrao feed.

[rodrigogiraoserrao]

EDIT FEED

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I want to change my current feed url from mathspp.com/blog/pydonts to https://mathspp.com/blog/tags/python.rss so that the feed subscribed to captures all my Python-related writing instead of just the Pydon'ts.

I checked the following required validations: (mark all 5 with [x])

1. My feed is valid, I checked using https://validator.w3.org/feed/check.cgi?url=https://mathspp.com/blog/tags/python.rss and it is valid!
2. My feed is a Python Specific feed, e.g: I am proposing the filtered tag or categorized feed url
3. I only post content to this feed which is related to the Python language and its components and libraries. Or content that I consider interesting for the Python community.
4. I am aware that once my feed is added it can take a few hours to start being fetched (according to the server update cycle)
5. My feed contains only content in English language.

Thanks in advance for adding my feed to the PythonPlanet! 👍

[hugovk]

Thanks!