some format aligning

[EddyCMWF]

Description

This is to align the documentation structure and config in ek-transforms

Contributor Declaration

By opening this pull request, I affirm the following:

• All authors agree to the Contributor License Agreement.
• The code follows the project's coding standards.
• I have performed self-review and added comments where needed.
• I have added or updated tests to verify that my changes are effective and functional.
• I have run all existing tests and confirmed they pass.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.68%. Comparing base (f1f878c) to head (61764c3).
⚠️ Report is 3 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop     #176   +/-   ##
========================================
  Coverage    94.68%   94.68%           
========================================
  Files           23       23           
  Lines          301      301           
========================================
  Hits           285      285           
  Misses          16       16           

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