[FLINK-31511][doc-zh] Update the document sql_functions_zh.yml and fix some parts in sql_functions.yml

[ruanhang1993]

What is the purpose of the change

This pull request update the document sql_functions_zh.yml .

Brief change log

• Modify the sql_functions_zh.yml and sql_functions.yml

Verifying this change

This change is a document change 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

[flinkbot]

CI report:

• b0baf8b6cec22f597d7af34faa996c40f9ced8d2 Azure: SUCCESS

Bot commands

The @flinkbot bot supports the following commands:

• @flinkbot run azure re-run the last Azure build

[leonardBang]

@ruanhang1993 Thanks for the contribution, the CI failed during docs_404_check, could you fix it ?

[ruanhang1993]

@flinkbot run azure