Add Priority Scheduling Documentation

[seanlaii]

What type of PR is this? /kind documentation

What this PR does / why we need it: Add Priority Scheduling documentation to demonstrate how to use Priority Scheduling feature.

Which issue(s) this PR fixes: Part of https://github.com/karmada-io/karmada/issues/5961

Special notes for your reviewer:

[seanlaii]

Hi @RainbowMango , and @whitewindmills , please help review the documentation when you are available. Thank you!

[whitewindmills]

/assign

[seanlaii]

The reference link somehow is not working for [zh], but [en] is correctly built.

11:06:31 PM: [INFO] [zh] Creating an optimized production build...
11:09:05 PM: [info] [webpackbar] Compiling Client
11:09:05 PM: [info] [webpackbar] Compiling Server
11:09:54 PM: [success] [webpackbar] Client: Compiled with some errors in 49.60s
11:09:54 PM: Error: Docs markdown link couldn't be resolved: (../../administrator/upgrading/v1.12-v1.13.md) in "/opt/build/repo/docs/userguide/scheduling/priority-scheduling.md" for version current
    at Array.forEach (<anonymous>)
11:09:54 PM: [ERROR] Client bundle compiled with errors therefore further build is impossible.
11:09:54 PM: error Command failed with exit code 1. (https://ntl.fyi/exit-code-1)

Do you know the root cause of the issue? Am I missing any configuration? Thank you!

[RainbowMango]

Echo from the deploy-preview log.

11:09:54 AM: Error: Docs markdown link couldn't be resolved: (../../administrator/upgrading/v1.12-v1.13.md) in "/opt/build/repo/docs/userguide/scheduling/priority-scheduling.md" for version current at Array.forEach ()

It shows that the link ../../administrator/upgrading/v1.12-v1.13.md can not be resolved. I will leave a review comments, then.

[karmada-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: RainbowMango

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• ~~OWNERS~~ [RainbowMango]

Approvers can indicate their approval by writing /approve in a comment Approvers can cancel approval by writing /approve cancel in a comment