chore: fix dead link

[ruquanzhao]

What type of PR is this?

/kind documentation

What this PR does / why we need it:

fix deadlink, to aovid blocking CI

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?

Additional documentation e.g., design docs, usage docs, etc.:

[coveralls]

Pull Request Test Coverage Report for Build 15917439397

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.02%) to 46.363%

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Totals
Change from base Build 15823185054:	0.02%
Covered Lines:	11384
Relevant Lines:	24554

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💛 - Coveralls