Update Readme ,Github Action badge

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[codecov-commenter]

Codecov Report

Merging #1365 (3043645) into master (685bf56) will decrease coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1365      +/-   ##
==========================================
- Coverage   70.66%   70.64%   -0.02%     
==========================================
  Files         376      376              
  Lines       32233    32233              
==========================================
- Hits        22776    22772       -4     
- Misses       7844     7848       +4     
  Partials     1613     1613              

Impacted Files	Coverage Δ
os/gspath/gspath_cache.go	86.95% <0.00%> (-6.53%)	⬇️
net/gtcp/gtcp_pool.go	36.84% <0.00%> (-3.95%)	⬇️
os/gmutex/gmutex.go	97.87% <0.00%> (+2.12%)	⬆️

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