FIX generics like type JSON[K,V string] map[K]V

[thinkhp]

Relation issue
#1508

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: +0.02 🎉

Comparison is base (f475da2) 85.18% compared to head (7a0f0dc) 85.20%.

❗ Current head 7a0f0dc differs from pull request most recent head bcc918f. Consider uploading reports for the commit bcc918f to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1509      +/-   ##
==========================================
+ Coverage   85.18%   85.20%   +0.02%     
==========================================
  Files          19       19              
  Lines        3659     3664       +5     
==========================================
+ Hits         3117     3122       +5     
  Misses        461      461              
  Partials       81       81              

Impacted Files	Coverage Δ
generics.go	100.00% <100.00%> (ø)

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

☔ View full report in Codecov by Sentry.
📢 Do you have feedback about the report comment? Let us know in this issue.

[ubogdan]

LGTM

[ubogdan]

@thinkhp Thanks for your contribution.