[Fix] Fix some typos in configs

[liqikai9]

Motivation

Modificatiorelatedn

1. Modify typos in related configs.
2. Modify the requirements/dics.txt. Refer to [Docs] Fix markdown version mmcv#2121, otherwise the documentation can not be built.

BC-breaking (Optional)

Use cases (Optional)

Checklist

Before PR:

• I have read and followed the workflow indicated in the CONTRIBUTING.md to create this PR.
• Pre-commit or linting tools indicated in CONTRIBUTING.md are used to fix the potential lint issues.
• Bug fixes are covered by unit tests, the case that causes the bug should be added in the unit tests.
• New functionalities are covered by complete unit tests. If not, please add more unit tests to ensure correctness.
• The documentation has been modified accordingly, including docstring or example tutorials.

After PR:

• CLA has been signed and all committers have signed the CLA in this PR.

[codecov]

Codecov Report

Merging #1496 (3ae4f4c) into master (afb37d4) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1496   +/-   ##
=======================================
  Coverage   84.47%   84.47%           
=======================================
  Files         236      236           
  Lines       20036    20036           
  Branches     3602     3602           
=======================================
  Hits        16925    16925           
  Misses       2231     2231           
  Partials      880      880           

Flag	Coverage Δ
unittests	84.37% <ø> (ø)

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