[Docs] fix readthedocs configuration

[Ben-Louis]

Motivation

Modification

BC-breaking (Optional)

Use cases (Optional)

Checklist

Before PR:

• I have read and followed the workflow indicated in the CONTRIBUTING.md to create this PR.
• Pre-commit or linting tools indicated in CONTRIBUTING.md are used to fix the potential lint issues.
• Bug fixes are covered by unit tests, the case that causes the bug should be added in the unit tests.
• New functionalities are covered by complete unit tests. If not, please add more unit tests to ensure correctness.
• The documentation has been modified accordingly, including docstring or example tutorials.

After PR:

• CLA has been signed and all committers have signed the CLA in this PR.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 71.72%. Comparing base (5961ae3) to head (113ef75).

Additional details and impacted files

@@             Coverage Diff             @@
##           dev-1.x    #2979      +/-   ##
===========================================
+ Coverage    71.68%   71.72%   +0.03%     
===========================================
  Files          293      293              
  Lines        20072    20072              
  Branches      3408     3408              
===========================================
+ Hits         14389    14396       +7     
+ Misses        4863     4860       -3     
+ Partials       820      816       -4     

Flag	Coverage Δ
unittests	71.72% <ø> (+0.03%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.