Added a table of content

[NilmaPeiris]

No description provided.

[codecov]

Codecov Report

Merging #110 (5276442) into master (8777ccf) will increase coverage by 0.89%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master     #110      +/-   ##
============================================
+ Coverage     81.48%   82.37%   +0.89%     
+ Complexity      149      148       -1     
============================================
  Files            13       13              
  Lines           443      437       -6     
  Branches         43       41       -2     
============================================
- Hits            361      360       -1     
+ Misses           63       61       -2     
+ Partials         19       16       -3     

Impacted Files	Coverage Δ	Complexity Δ
...ins/plugins/checks/github/GitHubChecksContext.java	100.00% <0.00%> (ø)	20.00% <0.00%> (ø%)
...ins/plugins/checks/github/GitSCMChecksContext.java	68.18% <0.00%> (+6.18%)	15.00% <0.00%> (-1.00%)	⬆️

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[XiongKezhi]

maybe it's better to put the table of contents after the introduction like git plugin: https://github.com/jenkinsci/git-plugin#git-plugin

[NilmaPeiris]

maybe it's better to put the table of contents after the introduction like git plugin: https://github.com/jenkinsci/git-plugin#git-plugin

Yeah sure I"ll make change that