[Docs] Update Chinese Colab tutorials

[Ezra-Yu]

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Motivation

Fix tutorials *.ipybn files.

Modification

Fix tutorials *.ipybn files.

BC-breaking (Optional)

No.

Checklist

Before PR:

• Pre-commit or other linting tools are used to fix the potential lint issues.
• Bug fixes are fully covered by unit tests, the case that causes the bug should be added in the unit tests.
• The modification is covered by complete unit tests. If not, please add more unit test to ensure the correctness.
• The documentation has been modified accordingly, like docstring or example tutorials.

After PR:

• If the modification has potential influence on downstream or other related projects, this PR should be tested with those projects, like MMDet or MMSeg.
• CLA has been signed and all committers have signed the CLA in this PR.

[codecov]

Codecov Report

Merging #483 (ea0c991) into master (6fba107) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #483   +/-   ##
=======================================
  Coverage   78.01%   78.01%           
=======================================
  Files         101      101           
  Lines        5617     5617           
  Branches      923      923           
=======================================
  Hits         4382     4382           
  Misses       1108     1108           
  Partials      127      127           

Flag	Coverage Δ
unittests	78.01% <ø> (ø)

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[mzr1996]

LGTM