Revise contribution steps for branch naming and CI

[babenek]

Updated contribution guidelines to reflect branch naming changes and added a note about running Actions.

Description

Please include a summary of the change and which is fixed.

• Update docs

How has this been tested?

Please describe the tests that you ran to verify your changes.

• documentation

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.29%. Comparing base (88ca3ed) to head (00a9ac6).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #818      +/-   ##
==========================================
+ Coverage   92.27%   92.29%   +0.01%     
==========================================
  Files         145      145              
  Lines        5905     5905              
  Branches      967      967              
==========================================
+ Hits         5449     5450       +1     
  Misses        294      294              
+ Partials      162      161       -1     

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[Pomidorry]