BLD: fix doc build

[UranusSeven]

What do these changes do?

Fix doc build.

Related issue number

Check code requirements

• tests added / passed (if needed)
• Ensure all linting tests pass

[aresnow1]

Is there a way to test it in CI? Last commit passed all checks.

[codecov]

Codecov Report

Merging #481 (fc3674d) into main (9464c48) will decrease coverage by 0.76%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main     #481      +/-   ##
==========================================
- Coverage   75.19%   74.43%   -0.76%     
==========================================
  Files         998      998              
  Lines       77474    77474              
  Branches    16093    16093              
==========================================
- Hits        58255    57669     -586     
- Misses      16821    18299    +1478     
+ Partials     2398     1506     -892     

Flag	Coverage Δ
unittests	74.38% <ø> (-0.69%)	⬇️

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see 426 files with indirect coverage changes

[UranusSeven]

Is there a way to test it in CI? Last commit passed all checks.

I haven't found a proper way to do it. But a workaround could be import your own fork-repo to build the docs and build the PR barnch before it got merged.

[qianduoduo0904]

LGTM