fix: changelog

[germa89]

Description

Fix changelog format issue.

Issue linked

This was blocking a release

Checklist

• I have visited and read Develop PyMAPDL.
• I have tested my changes locally
• I have added necessary documentation or updated existing documentation.
• I have followed the PyMAPDL coding style guidelines.
• I have added appropriate unit tests that also ensure the minimal coverage criteria.
• I have reviewed my changes before submitting this pull request.
• I have linked the issue or issues that are solved to the PR if any.
• I have assigned this PR to myself.
• I have marked this PR as draft if it is not ready to be reviewed yet.
• I have made sure that the title of my PR follows Commit naming conventions (e.g. feat: adding new MAPDL command)

[ansys-reviewer-bot]

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[germa89]

@pyansys-ci-bot LGTM. Approving and merging since it is a small change.

[pyansys-ci-bot]

✅ Approving this PR because germa89 said so in here 😬

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 87.06%. Comparing base (e83f46c) to head (82332ad).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3640      +/-   ##
==========================================
- Coverage   87.08%   87.06%   -0.02%     
==========================================
  Files         187      187              
  Lines       14679    14679              
==========================================
- Hits        12783    12781       -2     
- Misses       1896     1898       +2