tested parameter signature overwriting docstrings

[hepengfe]

This PR fixes #722.

Description of changes

• tried out sphinx-autodoc-typehints to fix DataPack.get()

Possible influences of this PR.

Describe what are the possible side-effects of the code change.

Test Conducted

Describe what test cases are included for the PR.

[codecov]

Codecov Report

Merging #723 (005cfc0) into master (f52e728) will increase coverage by 0.02%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #723      +/-   ##
==========================================
+ Coverage   81.40%   81.43%   +0.02%     
==========================================
  Files         243      243              
  Lines       18398    18427      +29     
==========================================
+ Hits        14977    15006      +29     
  Misses       3421     3421              

Impacted Files	Coverage Δ
forte/common/resources.py	82.92% <ø> (ø)
forte/data/base_extractor.py	75.00% <ø> (ø)
forte/data/base_pack.py	77.59% <ø> (ø)
forte/data/base_reader.py	87.40% <ø> (ø)
forte/data/base_store.py	70.45% <ø> (ø)
forte/data/batchers.py	91.75% <ø> (ø)
forte/data/converter/converter.py	95.78% <ø> (ø)
forte/data/converter/feature.py	87.00% <ø> (ø)
forte/data/data_pack.py	87.16% <ø> (ø)
forte/data/data_pack_dataset.py	98.55% <ø> (ø)
... and 33 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update b3b0438...005cfc0. Read the comment docs.