chore: Revert "chore: Delete generated RTD docs (#3126)"

[felixwang9817]

Signed-off-by: Felix Wang wangfelix98@gmail.com

What this PR does / why we need it:

Which issue(s) this PR fixes:

Fixes #

[kevjumba]

/lgtm

[achals]

Do you happen to know how this folder is used by rtd/sphinx?

[achals]

/lgtm

[feast-ci-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: achals, felixwang9817, kevjumba

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• OWNERS [achals,felixwang9817,kevjumba]

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[codecov-commenter]

Codecov Report

Merging #3141 (f8bfcd4) into master (c1c71da) will decrease coverage by 8.84%.
The diff coverage is n/a.

❗ Current head f8bfcd4 differs from pull request most recent head a7f2558. Consider uploading reports for the commit a7f2558 to get more accurate results

@@            Coverage Diff             @@
##           master    #3141      +/-   ##
==========================================
- Coverage   67.11%   58.26%   -8.85%     
==========================================
  Files         175      209      +34     
  Lines       15905    17582    +1677     
==========================================
- Hits        10675    10245     -430     
- Misses       5230     7337    +2107     

Flag	Coverage Δ
integrationtests	?
unittests	58.26% <ø> (?)

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

Impacted Files	Coverage Δ
...sts/integration/registration/test_universal_cli.py	20.20% <0.00%> (-79.80%)	⬇️
...ts/integration/offline_store/test_offline_write.py	26.08% <0.00%> (-73.92%)	⬇️
...fline_store/test_universal_historical_retrieval.py	28.75% <0.00%> (-71.25%)	⬇️
...ests/integration/e2e/test_python_feature_server.py	29.50% <0.00%> (-70.50%)	⬇️
...dk/python/tests/integration/e2e/test_validation.py	27.55% <0.00%> (-69.30%)	⬇️
...s/integration/registration/test_universal_types.py	32.25% <0.00%> (-67.75%)	⬇️
sdk/python/feast/infra/online_stores/redis.py	28.39% <0.00%> (-66.67%)	⬇️
sdk/python/tests/integration/e2e/test_usage_e2e.py	33.87% <0.00%> (-66.13%)	⬇️
sdk/python/tests/data/data_creator.py	34.78% <0.00%> (-65.22%)	⬇️
...n/tests/integration/registration/test_inference.py	35.71% <0.00%> (-64.29%)	⬇️
... and 159 more

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