Fix typo in readme of hotrod example

[ruthetum]

Which problem is this PR solving?

• Invalid docker run script about hotrod example

Short description of the changes

• Fixes a minor typo in readme of hotrod example

[yurishkuro]

Thx

[codecov]

Codecov Report

Patch coverage has no change and project coverage change: +0.01 🎉

Comparison is base (8204fa5) 97.09% compared to head (4d9d2c5) 97.10%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4371      +/-   ##
==========================================
+ Coverage   97.09%   97.10%   +0.01%     
==========================================
  Files         300      300              
  Lines       17701    17701              
==========================================
+ Hits        17186    17189       +3     
+ Misses        414      412       -2     
+ Partials      101      100       -1     

Flag	Coverage Δ
unittests	97.10% <ø> (+0.01%)	⬆️

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see 1 file with indirect coverage changes

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