style: normalize Android RST indentation

[juliosuas]

Summary

• normalize Android RST indentation to the documented 3-space style
• adjust nested directives and code blocks in the Android docs listed in Renormalize indentation in android documentation #470
• include the moved BeagleY-AI Android app note path that replaced the issue's older AM67A path

Partially addresses #470.

Verification

• git diff --check
• docker run --rm -v "$PWD":/build -w /build ghcr.io/texasinstruments/processor-sdk-doc:latest rstcheck source/android/Application_Notes_Android_Secure_Build.rst source/android/Application_Notes_Camera.rst source/android/Application_Notes_Sample_Maps_App.rst source/android/Overview_Building_the_SDK.rst source/android/Overview_Flashing.rst source/boards/beagle/BeagleY-AI/android/Application_Notes_BeagleY_AI.rst
  • reports only the existing Overview_Flashing.rst INFO about the enumerated list continuing at step 5 after the command table
• docker run --rm -v "$PWD":/build -w /build ghcr.io/texasinstruments/processor-sdk-doc:latest make lint
  • currently fails on pre-existing issues outside the files changed here