update check_json_path

[mirshahriar]

issue: #166

[codecov-io]

Codecov Report

Merging #310 into master will decrease coverage by 0.4%.
The diff coverage is 30.95%.

@@            Coverage Diff             @@
##           master     #310      +/-   ##
==========================================
- Coverage   31.03%   30.62%   -0.41%     
==========================================
  Files           8        9       +1     
  Lines         435      542     +107     
==========================================
+ Hits          135      166      +31     
- Misses        287      353      +66     
- Partials       13       23      +10

Impacted Files	Coverage Δ
plugins/check_json_path/lib.go	28.97% <30.95%> (ø)

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