docs(document): add fluent interface and make docbot generate it

[hanxiao]

No description provided.

[codecov]

Codecov Report

Merging #3980 (1b0d0bd) into master (48b14e0) will increase coverage by 0.16%.
The diff coverage is 75.00%.

❗ Current head 1b0d0bd differs from pull request most recent head 7bca12e. Consider uploading reports for the commit 7bca12e to get more accurate results

@@            Coverage Diff             @@
##           master    #3980      +/-   ##
==========================================
+ Coverage   88.78%   88.95%   +0.16%     
==========================================
  Files         180      180              
  Lines       12667    12670       +3     
==========================================
+ Hits        11247    11270      +23     
+ Misses       1420     1400      -20     

Flag	Coverage Δ
daemon	43.37% <50.00%> (-0.01%)	⬇️
jina	87.19% <75.00%> (+0.16%)	⬆️

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

Impacted Files	Coverage Δ
jina/types/document/__init__.py	84.37% <50.00%> (ø)
jina/types/document/mixins/attribute.py	91.66% <100.00%> (ø)
jina/types/document/mixins/match.py	64.28% <100.00%> (ø)
jina/peapods/peas/__init__.py	85.10% <0.00%> (-1.60%)	⬇️
jina/peapods/runtimes/zmq/zed.py	91.78% <0.00%> (-0.46%)	⬇️
jina/hubble/helper.py	90.15% <0.00%> (+0.15%)	⬆️
jina/helper.py	84.01% <0.00%> (+0.71%)	⬆️
jina/flow/base.py	93.04% <0.00%> (+1.32%)	⬆️
jina/peapods/zmq/__init__.py	90.46% <0.00%> (+1.39%)	⬆️
jina/peapods/pods/compound.py	90.05% <0.00%> (+3.31%)	⬆️

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[github-actions]

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