docs: standardize malware report headings

[wenxiaojie1]

Summary

• standardize all malware-family report headings on the existing New Quark Rules For form
• normalize the Anubis, GodFather, and TangleBot title casing
• update README showcase links for the renamed BRATA, Cerberus, SuperCardX, and NGate anchors

Fixes #941

Validation

• docs\make.bat html (build succeeded; existing warnings remain for the missing esting toctree entry and duplicate here target)

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 80.29%. Comparing base (cb80e96) to head (c4ed5da).

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #955   +/-   ##
=======================================
  Coverage   80.29%   80.29%           
=======================================
  Files          82       82           
  Lines        7190     7190           
=======================================
  Hits         5773     5773           
  Misses       1417     1417           

Flag	Coverage Δ
unittests	80.29% <ø> (ø)

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[haeter525]

Hi @wenxiaojie1, thank you for the PR.
However, I need to close this as we already have #950 covering the issue. We'd still love to have your input, so please feel free to leave a comment on #950. Thanks!