[Doc] Update English docs and old info for pretrained models

[KenelmQLH]

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Description

(Brief description on what this PR is about)

What does this implement/fix? Explain your changes.

Update old info for pretrained models in readme and docs

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
• [x] [DOC] Documentation content changes
• [ ] [OTHER] Other (please describe):

Changes

• Document, update old info for pretrained models

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

• [x] PR's title starts with a category (e.g. [BUGFIX], [FEATURE], [BREAKING], [DOC], etc)
• [x] Changes are complete (i.e. I finished coding on this PR)
• [x] All changes have test coverage and al tests passing
• [x] Code is well-documented (extended the README / documentation, if necessary)
• [x] 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 #125 (81cfa5c) into dev (68aeef5) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##              dev     #125   +/-   ##
=======================================
  Coverage   97.96%   97.96%           
=======================================
  Files          66       66           
  Lines        3245     3245           
=======================================
  Hits         3179     3179           
  Misses         66       66           

Impacted Files	Coverage Δ
EduNLP/Vector/t2v.py	100.00% <ø> (ø)

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