Fix doc of SetRawPathParam and SetPathParam

[icbd]

Fix doc about methods:

• SetRawPathParam
• SetPathParam

[jeevatkm]

Thanks for fixing godoc.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.82%. Comparing base (c639081) to head (b85452f).
Report is 1 commits behind head on v3.

Additional details and impacted files

@@           Coverage Diff           @@
##               v3     #997   +/-   ##
=======================================
  Coverage   99.82%   99.82%           
=======================================
  Files          18       18           
  Lines        3896     3896           
=======================================
  Hits         3889     3889           
  Misses          5        5           
  Partials        2        2           

Flag	Coverage Δ
unittests	99.82% <ø> (ø)

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