refactor: update stride handling and function documentation for blas/ext/base/dasumpw

[headlessNode]

Description

What is the purpose of this pull request?

This pull request:

• update stride handling for when stride is equal to zero.
• update function documentation.
• update test case where stride is equal to zero.

Related Issues

Does this pull request have any related issues?

No.

Questions

Any questions for reviewers of this pull request?

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.

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@stdlib-js/reviewers

[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
blas/ext/base/dasumpw	$\color{green}436/436$ $\color{green}+100.00\%$	$\color{green}24/24$ $\color{green}+100.00\%$	$\color{green}4/4$ $\color{green}+100.00\%$	$\color{green}436/436$ $\color{green}+100.00\%$

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

[Planeshifter]

LGTM!

[stdlib-bot]

PR Commit Message

refactor: update `stride` handling and function documentation for `blas/ext/base/dasumpw`

PR-URL: https://github.com/stdlib-js/stdlib/pull/3362

Reviewed-by: Philipp Burckhardt <pburckhardt@outlook.com>

Please review the above commit message and make any necessary adjustments.