docs: unify malware family report headings and parent doc title

[pulorsok]

Summary

Unify the section heading format across all malware family reports and align the parent document title.

• Rename every family section heading to <Family> Malware Family Analysis Report (previously a mix of New Quark Rules For <Family> and <Family> Malware Family Analysis Report).
• Fix inconsistent casing: anubis / godfather / tanglebot -> Anubis / GodFather / TangleBot; Brata -> BRATA.
• Rename the parent document title Quark Android Malware Analysis Report -> Quark Android Malware Family Analysis Reports (plural, reflecting that it collects multiple family reports).
• Update the README report links to the new section anchors, and add the missing AhRat row.

Notes

• Section renames change the generated anchors; the README links are updated in the same PR so no link breaks.
• Internal :ref: targets use explicit list-of-tested-apks-* labels, so they are unaffected by the heading renames.

Closes #941

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 80.27%. Comparing base (108394f) to head (3b644ce).

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #950   +/-   ##
=======================================
  Coverage   80.27%   80.27%           
=======================================
  Files          82       82           
  Lines        7185     7185           
=======================================
  Hits         5768     5768           
  Misses       1417     1417           

Flag	Coverage Δ
unittests	80.27% <ø> (ø)

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