[hotfix][doc]Fixed the problem that the Checkpoint document directory…

[meng1222]

What is the purpose of the change

I found that there is one place in the Chinese documentation of Checkpoint that cannot be jumped correctly.And i fixed it.

Brief change log

Modify Checkpoint Chinese document.

Verifying this change

Please make sure both new and modified tests in this PR follows the conventions defined in our code quality guide: https://flink.apache.org/contributing/code-style-and-quality-common.html#testing

(Please pick either of the following options)

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): (yes / no) no
• The public API, i.e., is any changed class annotated with @Public(Evolving): (yes / no) no
• The serializers: (yes / no / don't know) no
• The runtime per-record code paths (performance sensitive): (yes / no / don't know) no
• Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Kubernetes/Yarn, ZooKeeper: (yes / no / don't know) no
• The S3 file system connector: (yes / no / don't know) no

Documentation

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

[flinkbot]

CI report:

• f2170afef3d14addafd881318b01f524a9c2b560 Azure: SUCCESS

Bot commands

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

[meng1222]

LGTM

thanks.