docs: improve doctests for ndarray instances in math/special/abs

[AyushiJain18270]

Resolves a part of #{{9329}}.

Description

What is the purpose of this pull request?

This pull request:

• this pr is for updation of doctests in ndarray in special/abs

Related Issues

Does this pull request have any related issues?

This pull request has the following related issues:

• [RFC]: Improve doctests for ndarray instances in documentation examples (tracking issue) #9329

Questions

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No.

Other

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No.

Checklist

Please ensure the following tasks are completed before submitting this pull request.

• Read, understood, and followed the contributing guidelines.

AI Assistance

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• No

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• Code generation (e.g., when writing an implementation or fixing a bug)
• Test/benchmark generation
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• Research and understanding

Disclosure

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N/A

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@stdlib-js/reviewers

[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
math/special/abs	$\color{green}375/375$ $\color{green}+100.00%$	$\color{green}7/7$ $\color{green}+100.00%$	$\color{green}0/0$ $\color{green}+100.00%$	$\color{green}375/375$ $\color{green}+100.00%$

The above coverage report was generated for the changes in this PR.

[kgryte]

LGTM