gh-154753: Update references to moved files in the docs

[BHUVANSH855]

Summary

Update documentation references to reflect files that have moved to their current locations in the CPython source tree.

The changes include:

• Update Android testbed and README references to Platforms/Android/.
• Update iOS documentation references to Platforms/Apple/.
• Update the iOS configuration documentation to reference Platforms/Apple/iOS/README.md.
• Update the Capsules implementation reference from Objects/pycapsule.c to Objects/capsule.c.
• Update the code object documentation reference from the removed Objects/lnotab_notes.txt to InternalDocs/code_objects.md.
• Fix the malformed Markdown link for codeobject.co_positions.
• Remove the broken link to the generated jit_stencils.h file.

Tests

• git diff --cached --check — passed
• Targeted pre-commit checks — passed
• make -C Doc html SPHINXOPTS="-j1" — completed with one pre-existing duplicate-label warning in Doc/using/windows.rst and Doc/reference/datamodel.rst.

Closes issue gh-154753

[read-the-docs-community]

Documentation build overview

📚 cpython-previews | 🛠️ Build #34060662 | 📁 Comparing 63129d9 against main (a7541c3)

  🔍 Preview build  

31 files changed · ± 31 modified

± Modified

• extending/extending.html
• library/ast.html
• library/compression.zstd.html
• library/concurrent.futures.html
• library/csv.html
• library/curses.html
• library/email.compat32-message.html
• library/email.contentmanager.html
• library/email.examples.html
• library/email.header.html
• and 21 more...

[mhsmith]

The Android changes are all fine.

[freakboy3742]

iOS changes look good to me (with the one additional change @StanFromIreland has already flagged).

[StanFromIreland]

LGTM

[miss-islington-app]

Thanks @BHUVANSH855 for the PR, and @StanFromIreland for merging it 🌮🎉.. I'm working now to backport this PR to: 3.15.
🐍🍒⛏🤖

[bedevere-app]

GH-155774 is a backport of this pull request to the 3.15 branch.

[StanFromIreland]

@BHUVANSH855 can you please backport to 3.14/3.13, if necessary? You'll have to do it manually as some changes (e.g. the move to Platforms/ don't apply there).

[BHUVANSH855]

@BHUVANSH855 can you please backport to 3.14/3.13, if necessary? You'll have to do it manually as some changes (e.g. the move to Platforms/ don't apply there).

ya, I will do it