Remove 'Changes made' from README

[WikiRik]

Added in https://github.com/validatorjs/validator.js/pull/1678 without specific reason

Checklist

• [X] PR contains only changes related; no stray files, etc.
• [X] README updated (where applicable)
• [X] Tests written (where applicable)

[codecov[bot]]

Codecov Report

Merging #2024 (e143430) into master (86a07ba) will not change coverage. The diff coverage is n/a.

@@            Coverage Diff            @@
##            master     #2024   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          104       104           
  Lines         2203      2203           
  Branches       477       477           
=========================================
  Hits          2203      2203           

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[WikiRik]

@rubiin not sure if you've seen this one before, but might be nice to remove this line before the next release

[rubiin]

LGTM