[PR #7272/b2a7983a backport][3.9] Fix Read The Docs config

[patchback]

This is a backport of PR #7272 as merged into master (b2a7983).

None

[codecov]

Codecov Report

Merging #7273 (334e837) into 3.9 (9cd61ee) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##              3.9    #7273   +/-   ##
=======================================
  Coverage   97.32%   97.32%           
=======================================
  Files         108      108           
  Lines       31667    31667           
  Branches     4023     4023           
=======================================
  Hits        30819    30819           
  Misses        641      641           
  Partials      207      207           

Flag	Coverage Δ
CI-GHA	97.22% <ø> (ø)
OS-Linux	96.89% <ø> (ø)
OS-Windows	94.49% <ø> (ø)
OS-macOS	96.47% <ø> (ø)
Py-3.10.11	96.95% <ø> (ø)
Py-3.11.0	96.39% <ø> (ø)
Py-3.7.16	96.70% <ø> (ø)
Py-3.7.9	94.33% <ø> (ø)
Py-3.8.10	94.27% <ø> (ø)
Py-3.8.16	96.61% <ø> (ø)
Py-3.9.13	94.27% <ø> (ø)
Py-3.9.16	96.64% <ø> (ø)
Py-pypy7.3.11	94.04% <ø> (-0.01%)	⬇️
VM-macos	96.47% <ø> (ø)
VM-ubuntu	96.89% <ø> (ø)
VM-windows	94.49% <ø> (ø)

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