[Docs] Minor fixes in EN docs to remove or replace unicode chars with ascii

[evdcush]

Motivation

While attempting to sphinx-build a latexpdf of the EN docs on latest master, I encountered several build failures due to the usage of various non-ascii chars.

For example:

• 'Full-width' punctuation chars instead of normal ascii:
  • ： vs :
  • （） vs ()
  • ， vs ,
  • etc..
• Various zh_cn comments in documented code-blocks

The use of "full-width" chars (also referred to as 'double-byte' in JIS encoding) can cause issues with certain Sphinx build target formats (such as latexpdf).

They can also cause various other issues for users, especially users who can only reference EN documentation, who may not have a device with Asian language support.

As such, to allow for smoother docs builds and for usability/readability for EN-based users, our EN docs should be constrained to the ASCII charset as much as possible.

Modification

Remove zh_cn comments from EN docs:

• docs/en/migration/runner.md
• docs/en/tutorials/model.md

Replace 'full-width' punctuation chars with ascii:

• docs/en/advanced_tutorials/basedataset.md
• docs/en/advanced_tutorials/config.md
• docs/en/advanced_tutorials/initialize.md
• docs/en/advanced_tutorials/test_time_augmentation.md
• docs/en/tutorials/optim_wrapper.md
• docs/en/tutorials/param_scheduler.md

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, like MMDet or MMCls. ✅
4. The documentation has been modified accordingly, like docstring or example tutorials. ✅

[CLAassistant]

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[OpenMMLab-Assistant-004]

Hi @evdcush ！First of all, we want to express our gratitude for your significant PR in the mmengine project. Your contribution is highly appreciated, and we are grateful for your efforts in helping improve this open-source project during your personal time. We believe that many developers will benefit from your PR.

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