[DOC]Update documents

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Description

(Brief description on what this PR is about)

What does this implement/fix? Explain your changes.

1.Update gensim_vec.py. It is neccessary if autodoc can identify it.
2.Update ModelZoo.rst
3.Update index.rst
4.Update pretrain.rst
5.Update tokenizer.rst
6.Update utils.rst
7.Update vector.rst
8.Update /api/index.rst
9.Update PureTextTokenizer.rst
10.Update 令牌化.rst
11.Update 语义成分分解.rst
12.Update d2v_bow_tfidf.ipynb
13.Update w2v_stem_text.ipynb
14.Update sif.ipynb

Pull request type

• [DATASET] Add a new dataset
• [BUGFIX] Bugfix
• [FEATURE] New feature (non-breaking change which adds functionality)
• [BREAKING] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [STYLE] Code style update (formatting, renaming)
• [REFACTOR] Refactoring (no functional changes, no api changes)
• [BUILD] Build related changes
• [DOC] Documentation content changes
• [OTHER] Other (please describe):

Changes

1.Update gensim_vec.py. It is neccessary if autodoc can identify it.
2.Update ModelZoo.rst
3.Update index.rst
4.Update pretrain.rst
5.Update tokenizer.rst
6.Update utils.rst
7.Update vector.rst
8.Update /api/index.rst
9.Update PureTextTokenizer.rst
10.Update 令牌化.rst
11.Update 语义成分分解.rst
12.Update d2v_bow_tfidf.ipynb
13.Update w2v_stem_text.ipynb
14.Update sif.ipynb

Does this close any currently open issues?

N/A

Any relevant logs, error output, etc?

N/A

Checklist

Before you submit a pull request, please make sure you have to following:

Essentials

• PR's title starts with a category (e.g. [BUGFIX], [FEATURE], [BREAKING], [DOC], etc)
• Changes are complete (i.e. I finished coding on this PR)
• All changes have test coverage and al tests passing
• Code is well-documented (extended the README / documentation, if necessary)
• If this PR is your first one, add your name and github account to AUTHORS.md

Comments

• If this change is a backward incompatible change, why must this change be made.
• Interesting edge cases to note here

[codecov-commenter]

Codecov Report

Merging #54 (f55a876) into docs (b02a57e) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             docs      #54   +/-   ##
=======================================
  Coverage   99.85%   99.85%           
=======================================
  Files          46       46           
  Lines        1364     1364           
=======================================
  Hits         1362     1362           
  Misses          2        2           

Impacted Files	Coverage Δ
EduNLP/Pretrain/gensim_vec.py	100.00% <100.00%> (ø)

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