modified correlation API response

[parmesant]

Fixes #XXXX.

Description

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This PR has:

• been tested to ensure log ingestion and log query works.
• added comments explaining the "why" and the intent of the code wherever would not be obvious for an unfamiliar reader.
• added documentation for new or modified features or behaviors.

[coveralls]

Pull Request Test Coverage Report for Build 12745045876

Details

• 0 of 2 (0.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 12.362%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/handlers/http/correlation.rs	0	2	0.0%

Totals
Change from base Build 12732885504:	0.0%
Covered Lines:	2408
Relevant Lines:	19479

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💛 - Coveralls

[nikhilsinhaparseable]

looks good