docs: Remove beta badge

[mtrezza]

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[parse-github-assistant]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (f4b6b1b) to head (f8c2fee).
Report is 40 commits behind head on alpha.

Additional details and impacted files

@@            Coverage Diff            @@
##             alpha     #2473   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           64        64           
  Lines         6256      6256           
  Branches      1451      1476   +25     
=========================================
  Hits          6256      6256           

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[parseplatformorg]

🎉 This change has been released in version 6.1.0-alpha.1

[parseplatformorg]

🎉 This change has been released in version 6.1.0