Corrected the Prometheus scrape annotation syntax.

[shubham14bajpai]

Signed-off-by: Shazad Brohi brohishazad@gmail.com

Why is this PR required? What issue does it fix?: Fixes #

What this PR does?:

Cherry-picks #174

Does this PR require any upgrade changes?:

If the changes in this PR are manually verified, list down the scenarios covered::

Any additional information for your reviewer? : Mention if this PR is part of any design or a continuation of previous PRs

Checklist:

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