[cherry-pick][test](doc) add table design example in doris's doc to regression test (#42444)

[yagagagaga]

(cherry picked from commit 051128f)

What problem does this PR solve?

Issue Number: close #xxx

Related PR: #42444

Problem Summary:

Check List (For Committer)

• Test

  • Regression test
  • Unit Test
  • Manual test (add detailed scripts or steps below)
  • No need to test or manual test. Explain why:
    • This is a refactor/code format and no logic has been changed.
    • Previous test can cover this change.
    • No colde files have been changed.
    • Other reason

• Behavior changed:

  • No.
  • Yes.

• Does this need documentation?

  • No.
  • Yes.

• Release note

  None

Check List (For Reviewer who merge this PR)

• Confirm the release note
• Confirm test cases
• Confirm document
• Add branch pick label

[doris-robot]

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Since 2024-03-18, the Document has been moved to doris-website.
See Doris Document.

[dataroaring]

run buildall