[fix](cloud) fix 'sucess' -> 'success' typo in meta_service_http response

[SAY-5]

Proposed changes

HTTP response message in cloud/src/meta-service/meta_service_http.cpp line 377 reads:

"sucess to adjust rate limit"

Fixed to "success to adjust rate limit". String-literal-only change; no logic change.

Checklist

• Does not affect any functionalities

[hello-stephen]

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[yiguolei]

run buildall

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PR approved by at least one committer and no changes requested.

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PR approved by anyone and no changes requested.