docs: update example for blas/base/wasm/cscal

[Rupa-Rd]

Progresses #4833 .

Description

What is the purpose of this pull request?

This pull request:

• Resolves a part of [RFC]: Improve doctests for complex number typed arrays in documentation examples #4833

Related Issues

Does this pull request have any related issues?

No.

Questions

Any questions for reviewers of this pull request?

No.

Other

Any other information relevant to this pull request? This may include screenshots, references, and/or implementation notes.

No.

Checklist

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

• Read, understood, and followed the contributing guidelines.

---

@stdlib-js/reviewers

[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
blas/base/wasm/cscal	$\color{green}698/698$ $\color{green}+100.00\%$	$\color{green}17/17$ $\color{green}+100.00\%$	$\color{green}6/6$ $\color{green}+100.00\%$	$\color{green}698/698$ $\color{green}+100.00\%$

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

[kgryte]

All CI failures will need to be resolved before this PR can be reviewed.

[kgryte]

Still seeing lint failures.

[Rupa-Rd]

Still seeing lint failures.

Oops. I will check it again.

[kgryte]

LGTM after clean-up.