Docs still reference pre-`Platforms/` paths and removed files

[ZayanKhan-12]

Documentation

The Platforms/ re-organization (gh-146445) moved the Android and Apple build trees to Platforms/Android and Platforms/Apple, and the devguide was updated — but several Doc/ pages still reference the old locations, so their :source: links render as broken GitHub URLs on docs.python.org today:

• Doc/using/android.rst — five :source: references to Android/... (testbed, README, build.gradle.kts, MainActivity.kt, main_activity.c)
• Doc/using/ios.rst — Apple/iOS/README.md (×2), the testbed reference (Apple/iOS/testbed; the shared testbed now lives at Platforms/Apple/testbed), and a shell example invoking python Apple/testbed
• Doc/using/configure.rst — :source:`iOS/README.rst` (moved twice, and the file is Markdown)

Unrelated to the move, a few more references point at files that no longer exist:

• Doc/extending/extending.rst — Objects/pycapsule.c (the implementation is Objects/capsule.c)
• Doc/library/sys.rst — Objects/lnotab_notes.txt (removed in Remove deprecated co_lnotab from CodeType #134690; the locations table is now documented in InternalDocs/code_objects.md)
• InternalDocs/jit.md — links the gitignored build artifact jit_stencils.h (404 on GitHub)
• InternalDocs/code_objects.md — an inverted Markdown link, (text)[url], that doesn't render

I have a PR ready for all of these. Note the Platforms/ fixes apply to main only — 3.13/3.14 still have the old tree layout, so those hunks must not be backported.

Linked PRs

• gh-154753: Fix doc references to moved Platforms/ paths and removed files #154754