[Doc] Refine docs for Quick Run and Useful Tools

[Tai-Wang]

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Motivation

Refine docs for Quick Run and Useful Tools

Modification

Only modification for docs of these two sections mentioned above.

BC-breaking (Optional)

Does the modification introduce changes that break the back-compatibility of the downstream repos?
No.

Use cases (Optional)

If this PR introduces a new feature, it is better to list some use cases here, and update the documentation.

Checklist

1. Pre-commit or other linting tools are used to fix the potential lint issues.
2. The modification is covered by complete unit tests. If not, please add more unit test to ensure the correctness.
3. If the modification has potential influence on downstream projects, this PR should be tested with downstream projects.
4. The documentation has been modified accordingly, like docstring or example tutorials.

[codecov]

Codecov Report

Merging #686 (ac63b6a) into master (d0d3d94) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #686   +/-   ##
=======================================
  Coverage   51.02%   51.02%           
=======================================
  Files         204      204           
  Lines       15395    15395           
  Branches     2492     2492           
=======================================
  Hits         7856     7856           
  Misses       7021     7021           
  Partials      518      518           

Flag	Coverage Δ
unittests	51.02% <ø> (ø)

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