improve comment of router feature for ghttp.Server

[gqcn]

No description provided.

[codecov-commenter]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (3cd0059) 77.65% compared to head (6bb6246) 77.64%.
Report is 6 commits behind head on master.

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Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3014      +/-   ##
==========================================
- Coverage   77.65%   77.64%   -0.01%     
==========================================
  Files         647      647              
  Lines       54666    54706      +40     
==========================================
+ Hits        42449    42476      +27     
- Misses      10059    10075      +16     
+ Partials     2158     2155       -3     

Flag	Coverage Δ
go-1.18-386	77.64% <92.30%> (-0.02%)	⬇️
go-1.18-amd64	77.60% <92.30%> (-0.05%)	⬇️
go-1.19-386	77.60% <92.30%> (+0.04%)	⬆️
go-1.19-amd64	77.61% <92.30%> (-0.01%)	⬇️
go-1.20-386	77.64% <92.30%> (+0.05%)	⬆️
go-1.20-amd64	77.60% <92.30%> (-0.02%)	⬇️
go-1.21-386	77.58% <92.30%> (?)
go-1.21-amd64	77.60% <92.30%> (-0.03%)	⬇️

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Files	Coverage Δ
net/ghttp/ghttp.go	50.00% <ø> (ø)
net/ghttp/ghttp_server_router_serve.go	71.02% <100.00%> (-5.90%)	⬇️
net/ghttp/ghttp_server_router.go	68.61% <0.00%> (-1.56%)	⬇️

... and 5 files with indirect coverage changes

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