chore: fix JavaScript lint errors (issue #9965)

[SuYaSh-PaThAk04]

Resolves #resolves #9965.

Description

What is the purpose of this pull request?

This pull request:

• refractered the string to pass eslint and refractered the function for unnecesary nesting

Related Issues

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This pull request has the following related issues:

• resolves #c

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No.

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{{TODO: add disclosure if applicable}}

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@stdlib-js/reviewers

[SuYaSh-PaThAk04]

@kgryte can we do something like
var str = "I'm ready.";
var out = expandContractions( str );
// returns 'I am ready.'

[kgryte]

@SuYaSh-PaThAk04 You were updating the wrong example.

[kgryte]

As the CI failure is not due to changes introduced in this PR, I'll go ahead and merge.