chore: fix codecov.yml content

[SMoraisAnsys]

Description

While checking stuff in PyAEDT codecov result (use of multiple tags) I wanted to double check what was done in other repos. When checking the latest main's commit codecov I saw a warning, see below

This PR consists in fixing the "bug" that is reported by codecov.
To double check you can use the following command from the root of your repo
curl -X POST --data-binary @codecov.yml https://codecov.io/validate
Before the changes there is an error associated to "comment", now it's no longer present :)

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.28%. Comparing base (baa7ac0) to head (253521f).
Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3542      +/-   ##
==========================================
+ Coverage   87.48%   91.28%   +3.80%     
==========================================
  Files          58      187     +129     
  Lines       10217    14641    +4424     
==========================================
+ Hits         8938    13365    +4427     
+ Misses       1279     1276       -3     

[germa89]

Thank you a lot for this @SMoraisAnsys !! :)

Close #3518