allow suffix for timeout

[davies]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 90.62500% with 3 lines in your changes are missing coverage. Please review.

Project coverage is 55.37%. Comparing base (47544a8) to head (396778e).
Report is 8 commits behind head on main.

Files	Patch %	Lines
cmd/mdtest.go	0.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4641      +/-   ##
==========================================
- Coverage   55.46%   55.37%   -0.09%     
==========================================
  Files         160      160              
  Lines       43060    42857     -203     
==========================================
- Hits        23884    23734     -150     
+ Misses      16513    16483      -30     
+ Partials     2663     2640      -23     

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