[FLINK-23899][docs-zh] Translate the "Elastic Scaling" page into Chinese

[predatorray]

What is the purpose of the change

Translated the "Elastic Scaling" page into Chinese.

Brief change log

Translated the "Elastic Scaling" page into Chinese.

Verifying this change

This change is a translation without any test coverage.

Does this pull request potentially affect one of the following parts:

• Dependencies (does it add or upgrade a dependency): no
• The public API, i.e., is any changed class annotated with @Public(Evolving): no
• The serializers: no
• The runtime per-record code paths (performance sensitive): no
• Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Kubernetes/Yarn, ZooKeeper: no
• The S3 file system connector: no

Documentation

• Does this pull request introduce a new feature? no
• If yes, how is the feature documented? not applicable

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Last check on commit 371d9ad (Sun Aug 22 06:02:31 UTC 2021)

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CI report:

• 809752c Azure: SUCCESS

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[link3280]

@predatorray Thanks for creating this PR. The translation LGTM in general. I left some minor comments, PTAL.

[link3280]

Why is there an extra link tag without the actual URL?

[predatorray]

Because it is linked by this line. Shall I replace this anchor with the Chinese one, e.g. #入门 instead of #getting-started, or shall we follow the recommendation "4. 标题锚点链接" on this page?

[link3280]

Thanks for your explanation! WRT to the anchor question, cc @wuchong.

[wuchong]

Yes, this line is needed if we would like to preserve the original tag links.

[link3280]

I think 'options' might not be correctly translated. options means users can choose either reactive mode or adaptive scheduler.

[predatorray]

Here is the revised translation:
809752c#diff-69b2dca8ca68dd36524d019124dd2eef1e7914f45f6992733e7d221c13b68ea9R30

[predatorray]

@wuchong Would you like to share some ideas about the conversation on this line?

[wuchong]

LGTM.

[wuchong]

Thanks for the work @predatorray , @link3280