fix some typos

[cuishuang]

No description provided.

[codecov-commenter]

Codecov Report

Merging #1697 (2d58685) into master (d1f76f3) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master    #1697   +/-   ##
=======================================
  Coverage   71.45%   71.45%           
=======================================
  Files         445      445           
  Lines       42754    42754           
=======================================
  Hits        30549    30549           
+ Misses      10291    10290    -1     
- Partials     1914     1915    +1     

Flag	Coverage Δ
go-1.15	71.40% <100.00%> (ø)
go-1.16	71.44% <100.00%> (+0.01%)	⬆️
go-1.17	71.41% <100.00%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
os/gfpool/gfpool_pool.go	75.67% <100.00%> (ø)
net/gtcp/gtcp_pool.go	34.09% <0.00%> (-4.55%)	⬇️
os/gmutex/gmutex.go	94.73% <0.00%> (-2.64%)	⬇️
os/glog/glog_logger_rotate.go	67.31% <0.00%> (+1.46%)	⬆️
os/gspath/gspath_cache.go	94.73% <0.00%> (+7.01%)	⬆️

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