docs(python): rewrite page

[HonkingGoose]

Changes

• Rewrite page:
  • Use simple words and phrases
  • Use lists
  • Improve link name to our pep440 implementation
  • Rewrite paragraphs to be easier to understand

Context

Drive-by PR, not closing any issue with this.

Documentation (please check one with an [x])

• [x] I have updated the documentation, or
• [ ] No documentation update is required

How I've tested my work (please tick one)

I have verified these changes via:

• [x] Code inspection only, or
• [ ] Newly added/modified unit tests, or
• [ ] No unit tests but ran on a real repository, or
• [ ] Both unit tests + ran on a real repository