Correct a typo in configs/README.md

[felixonmars]

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[codecov-io]

Codecov Report

Merging #793 into master will decrease coverage by 0.05%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #793      +/-   ##
==========================================
- Coverage   51.64%   51.58%   -0.06%     
==========================================
  Files         205      205              
  Lines       17052    17052              
==========================================
- Hits         8807     8797      -10     
- Misses       7352     7357       +5     
- Partials      893      898       +5

Impacted Files	Coverage Δ
pkg/stream/stream.go	46.66% <0%> (-13.34%)	⬇️
pkg/buffer/iobuffer.go	75.31% <0%> (-2.52%)	⬇️

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[nejisama]

Please sign CLA

[felixonmars]

I already signed, not sure why the bot didn't update here.

[nejisama]

I already signed, not sure why the bot didn't update here.

you can close this pr, and start a new one

[nejisama]

I already signed, not sure why the bot didn't update here.

do not reopen this one, make a new pull request

[nejisama]

this pr still have cla bug. close it .