docs: improve secure connection communication

[RobPasMue]

Enhanced documentation for secure connections.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.86%. Comparing base (fac9486) to head (c4af555).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2423      +/-   ##
==========================================
+ Coverage   88.60%   91.86%   +3.25%     
==========================================
  Files         167      169       +2     
  Lines       11734    11788      +54     
==========================================
+ Hits        10397    10829     +432     
+ Misses       1337      959     -378     

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