[CI] fix github-pages

[antond-weta]

Description

Hopefully now both ReadTheDocs and GitHub-pages will work

Tests

Checklist:

• I have read the contribution guidelines.
• I have updated the documentation, if applicable. (Check if there is no
  need to update the documentation, for example if this is a bug fix that
  doesn't change the API.)
• I have ensured that the change is tested somewhere in the testsuite
  (adding new test cases if necessary).
• My code follows the prevailing code style of this project. If I haven't
  already run clang-format before submitting, I definitely will look at the CI
  test that runs clang-format and fix anything that it highlights as being
  nonconforming.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.89%. Comparing base (7e4223a) to head (52f84cb).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #312   +/-   ##
=======================================
  Coverage   91.89%   91.89%           
=======================================
  Files          17       17           
  Lines        3777     3777           
  Branches      558      558           
=======================================
  Hits         3471     3471           
  Misses        306      306           

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