Fixing release notes by fixing splitting index

[amontanez24]

resolves #2348
The PR #2351 was created using this update. As you can see, the correct amount of '#' characters is being added before the new notes

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.57%. Comparing base (075cdff) to head (425766c).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2350   +/-   ##
=======================================
  Coverage   98.57%   98.57%           
=======================================
  Files          59       59           
  Lines        6101     6101           
=======================================
  Hits         6014     6014           
  Misses         87       87           

Flag	Coverage Δ
integration	82.18% <ø> (ø)
unit	97.42% <ø> (ø)

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