[FLINK-22518][docs] Translate the page of "High Availability (HA)" in…

[movesan]

What is the purpose of the change

Translate "High Availability" page into Chinese.

The model of "High Availability (HA)" contains the following three pages:
https://ci.apache.org/projects/flink/flink-docs-release-1.12/zh/deployment/ha
https://ci.apache.org/projects/flink/flink-docs-release-1.12/zh/deployment/ha/zookeeper_ha.html
https://ci.apache.org/projects/flink/flink-docs-release-1.12/zh/deployment/ha/kubernetes_ha.html

Brief change log

• translate flink/docs/content.zh/docs/deployment/ha/_index.md
• translate flink/docs/content.zh/docs/deployment/ha/overview.md
• translate flink/docs/content.zh/docs/deployment/ha/zookeeper_ha.md
• translate flink/docs/content.zh/docs/deployment/ha/kubernetes_ha.md

Verifying this change

This change is a trivial rework / code cleanup 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/Mesos, 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? (no)

[flinkbot]

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Automated Checks

Last check on commit 3aa2cd2 (Sat Aug 28 12:17:57 UTC 2021)

Warnings:

• No documentation files were touched! Remember to keep the Flink docs up to date!

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Review Progress

• ❓ 1. The [description] looks good.
• ❓ 2. There is [consensus] that the contribution should go into to Flink.
• ❓ 3. Needs [attention] from.
• ❓ 4. The change fits into the overall [architecture].
• ❓ 5. Overall code [quality] is good.

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CI report:

• e63ab78 Azure: FAILURE
• b1a0329 UNKNOWN
• 17f27b7 Azure: PENDING
• 3aa2cd2 UNKNOWN

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[Myasuka]

Thanks for your contributions!
I have given some suggestions below, please take a look.

[Myasuka]

@movesan, Overall, it looks good to me. Would you please combine the three commits into one single commit and ensure the commit message is full and clean? You can then force push your commits to your branch to update this PR.

[movesan]

@movesan, Overall, it looks good to me. Would you please combine the three commits into one single commit and ensure the commit message is full and clean? You can then force push your commits to your branch to update this PR.
@Myasuka Hi Myasuka, thank you for your reply. I have combined the three commits into one single commit, Could you merge this PR into the master? Thanks a lot.

[Myasuka]

@movesan , thanks for your update!
However, the commit message is still not full and clean, it should not be [FLINK-22518][docs] Translate the page of "High Availability (HA)" in…. Please amend your commit message and then force push it.

[movesan]

@Myasuka Hi Myasuka, thank you for your review, I have modified to a more detailed comment. Please check it, thx.

[Myasuka]

LGTM