change ghproxy.com to gh-proxy.com

[LinuxSuRen]

missing part of #440

[codecov]

Codecov Report

Merging #443 (0e955fd) into master (29520bf) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #443   +/-   ##
=======================================
  Coverage   60.86%   60.86%           
=======================================
  Files          64       64           
  Lines        3450     3450           
=======================================
  Hits         2100     2100           
  Misses       1245     1245           
  Partials      105      105           

Flag	Coverage Δ
unittests	60.86% <100.00%> (ø)

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

Files	Coverage Δ
cmd/root.go	78.46% <100.00%> (ø)
cmd/search.go	88.37% <100.00%> (ø)
cmd/setup.go	80.76% <100.00%> (ø)