Matlab minimal edits

[ischoegl]

Changes proposed in this pull request

These are minor fixes.

• Adopt fix for MATLAB ct.gitCommit from [MATLAB] Improve performance in outofprocess mode #2042
• Streamline header on MATLAB samples page: there is already a 'Caution' admonition on that page.

Checklist

• The pull request includes a clear description of this code change
• Commit messages have short titles and reference relevant issues
• Build passes (scons build & scons test) and unit tests address code coverage
• Style & formatting of contributed code follows contributing guidelines
• The pull request is ready for review

[codecov]

Codecov Report

❌ Patch coverage is 0% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 76.38%. Comparing base (51d2cbc) to head (e229002).
⚠️ Report is 6 commits behind head on main.

Files with missing lines	Patch %	Lines
interfaces/matlab/Utility/+ct/gitCommit.m	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2047   +/-   ##
=======================================
  Coverage   76.38%   76.38%           
=======================================
  Files         463      463           
  Lines       55034    55034           
  Branches     9317     9317           
=======================================
  Hits        42037    42037           
  Misses       9865     9865           
  Partials     3132     3132           

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