gh-82151: Update and improve urlsplit docstring

[pranavchoudhary-tech]

This PR supersedes and finishes the work started in #18631 by @idomic.

It applies the final wording changes requested by the maintainers in the original PR review to clarify the urlsplit return components.

Closes #82151.

• Issue: urllib.parse docstrings incomplete #82151

[read-the-docs-community]

Documentation build overview

📚 cpython-previews | 🛠️ Build #33452453 | 📁 Comparing 1df22ec against main (548c731)

  🔍 Preview build  

13 files changed · ± 13 modified

± Modified

• library/dialog.html
• library/http.cookiejar.html
• library/http.server.html
• library/imaplib.html
• library/internet.html
• library/re.html
• library/tkinter.html
• library/tkinter.ttk.html
• library/urllib.parse.html
• library/urllib.robotparser.html
• and 3 more...

[orsenthil]

LGTM.

This will close the long discussions in the referenced issue, and follows the recommendation from that thread.

[miss-islington-app]

Thanks @pranavchoudhary-tech for the PR, and @orsenthil for merging it 🌮🎉.. I'm working now to backport this PR to: 3.13, 3.14, 3.15.
🐍🍒⛏🤖

[miss-islington-app]

Sorry, @pranavchoudhary-tech and @orsenthil, I could not cleanly backport this to 3.14 due to a conflict.
Please backport using cherry_picker on command line.

cherry_picker ad54b91b9fa4c5d12f155bb09138dff21a2bdec3 3.14

[bedevere-app]

GH-153154 is a backport of this pull request to the 3.15 branch.

[miss-islington-app]

Sorry, @pranavchoudhary-tech and @orsenthil, I could not cleanly backport this to 3.13 due to a conflict.
Please backport using cherry_picker on command line.

cherry_picker ad54b91b9fa4c5d12f155bb09138dff21a2bdec3 3.13

[bedevere-app]

GH-153155 is a backport of this pull request to the 3.14 branch.

[bedevere-app]

GH-153156 is a backport of this pull request to the 3.13 branch.

[orsenthil]

@pranavchoudhary-tech , do you know why the CLA is not showing up in the branches ? Could you please make sure they are signed.

Thank you.