feature: refactor get the snippet code

[NguyenTuanCanh]

Changes made:

1. Removed unnecessary nested promises by chaining then() calls.
2. Used forEach loop instead of for loop for iterating over codeLines.
3. Replaced indexOf with includes for checking if a line contains the search term.
4. Simplified the logic for setting startingLine and foundLine within the loop.
5. Replaced arrow functions with concise arrow functions where possible.

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Name	Status	Preview	Comments	Updated (UTC)
documentation	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	May 5, 2024 9:57am

[RaananW]

This is mainly a cosmetic change, right? No functionality has changed?

[RaananW]

I am a bit confused as to the current changes. Formatting has changed a bit, but it seems like the code as it is is almost (or even completely) the same?

[RaananW]

any update here? or should I close it?