[BUGFIX] Fix UnicodeDecodeError in method doc (#20214)

[sjiagc]

Description

On Windows, with package built in VS 2019, the mxnet Python module cannot be imported due to UnicodeDecodeError.

Checklist

Essentials

• PR's title starts with a category (e.g. [BUGFIX], [MODEL], [TUTORIAL], [FEATURE], [DOC], etc)
• Changes are complete (i.e. I finished coding on this PR)
• All changes have test coverage
• Code is well-documented

Changes

• Fix illegal characters in code and doc

Comments

• Changed '…', '‘' and '’' to "..." and '''.

[mxnet-bot]

Hey @sjiagc , Thanks for submitting the PR
All tests are already queued to run once. If tests fail, you can trigger one or more tests again with the following commands:

• To trigger all jobs: @mxnet-bot run ci [all]
• To trigger specific jobs: @mxnet-bot run ci [job1, job2]

---

CI supported jobs: [centos-cpu, unix-cpu, sanity, unix-gpu, miscellaneous, website, clang, edge, centos-gpu, windows-cpu, windows-gpu]

---

Note:
Only following 3 categories can trigger CI :PR Author, MXNet Committer, Jenkins Admin.
All CI tests must pass before the PR can be merged.

[leezu]

Please don't modify docs/python_docs/themes/mx-theme/mxtheme/static/sphinx_materialdesign_theme.js.map

[sjiagc]

Please don't modify docs/python_docs/themes/mx-theme/mxtheme/static/sphinx_materialdesign_theme.js.map

I see. Reverted change to this file. Thanks for reviewing!

[sjiagc]

@mxnet-bot run ci [unix-cpu]

[mxnet-bot]

Jenkins CI successfully triggered : [unix-cpu]