Rule documentation updates

[dannyc-grafana]

More docs updates for ya'll. If you'd prefer I open issues before making PRs let me know.

[codecov-commenter]

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Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 66.62%. Comparing base (1216c9b) to head (df5bdad).
Report is 26 commits behind head on master.

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Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1272      +/-   ##
==========================================
- Coverage   68.49%   66.62%   -1.88%     
==========================================
  Files          75       75              
  Lines        4384     5189     +805     
==========================================
+ Hits         3003     3457     +454     
- Misses       1233     1583     +350     
- Partials      148      149       +1     

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[ccojocar]

This is fine for configuration but we started a while a go this project to document each rule https://github.com/securego/securego.github.io. If you are interested in this area, you can contribute there. Thanks