docs: improve doctests in complex/base/wrap-function

[aryan7071]

Resolves a part of #8641

Description

What is the purpose of this pull request?

This pull request:

• Updates REPL and documentation examples in the complex/base/wrap-function package to use the compact complex instance doctest notation.
• Replaces example decomposition using realf/imagf with concise doctest annotations such as <Complex64>[ 7.0, 0.0 ].
• Removes example-only imports (realf, imagf) where they were only used to show decomposed values.
• Keeps all edits documentation-only (no runtime behavior or type changes).

Related Issues

Does this pull request have any related issues?

This pull request has the following related issues:

• [RFC]: Improve doctests for complex number instances in documentation examples (tracking issue) #8641

(Replace the placeholder above with the relevant issue number if applicable.)

Questions

Any questions for reviewers of this pull request?

yes , in this example there is a whole function of realf and imagf so do i need to change it or not ?

Other

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No.

Checklist

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• Read, understood, and followed the contributing guidelines.

AI Assistance

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• Test/benchmark generation
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[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
complex/base/wrap-function	$\color{green}271/271$ $color{green}+100.00%$	$\color{green}35/35$ $color{green}+100.00%$	$\color{green}8/8$ $color{green}+100.00%$	$\color{green}271/271$ $color{green}+100.00%$

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

[stdlib-bot]

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[kgryte]

LGTM after clean-up