Request body code highlighting fixed

[tarampampam]

Description

Fixed

• Request body code highlighting

Fixes #77

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I wrote unit tests for my code (if tests is required for my changes)
• I have made changes in CHANGELOG.md file

[codecov]

Codecov Report

Merging #79 (2c47f06) into master (2ad5006) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #79   +/-   ##
=======================================
  Coverage   85.81%   85.81%           
=======================================
  Files          49       49           
  Lines        1614     1614           
=======================================
  Hits         1385     1385           
  Misses        155      155           
  Partials       74       74           

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