Add descriptive header to each example

[svchb]

Extracted from #749

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 70.47%. Comparing base (e72c597) to head (229dca3).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #815   +/-   ##
=======================================
  Coverage   70.47%   70.47%           
=======================================
  Files         106      106           
  Lines        6893     6893           
=======================================
  Hits         4858     4858           
  Misses       2035     2035           

Flag	Coverage Δ
unit	70.47% <ø> (ø)

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[efaulhaber]

Thanks a lot! This is a great improvement. Just some minor remarks.

[efaulhaber]

/run-gpu-tests