fix getKmeshWaypointImage tag

[silenceper]

What type of PR is this?
/kind bug

What this PR does / why we need it:

Which issue(s) this PR fixes:
Fixes #1287

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

[kmesh-bot]

Welcome @silenceper! It looks like this is your first PR to kmesh-net/kmesh 🎉

[codecov]

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[hzxuzhonghu]

/lgtm

[kmesh-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hzxuzhonghu

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• OWNERS [hzxuzhonghu]

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