Update FindingsReport doc

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[codecov]

Codecov Report

Merging #2942 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master    #2942   +/-   ##
=========================================
  Coverage     80.28%   80.28%           
  Complexity     2454     2454           
=========================================
  Files           421      421           
  Lines          7405     7405           
  Branches       1356     1356           
=========================================
  Hits           5945     5945           
  Misses          757      757           
  Partials        703      703           

Impacted Files	Coverage Δ	Complexity Δ
...ch/detekt/core/reporting/console/FindingsReport.kt	100.00% <ø> (ø)	5.00 <0.00> (ø)

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