Do some optimization

[wxyn]

What is the purpose of the change

Update linkis Flink engine installation document link.

Brief change log

(for example:)

• Update linkis Flink engine installation document link;
• Application initialization is encapsulated into an interface, including configuration and task upload;
• Update validator dependency package.

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

• Dependencies (does it add or upgrade a dependency): (yes)
• Anything that affects deployment: (yes)
• The Core framework, i.e., JobManager, Server.: ( yes)

Documentation

• Does this pull request introduce a new feature? (yes)
• If yes, how is the feature documented? ( doc )