docs: update functions descriptions in math/base/special/cceil

[gunjjoshi]

Description

What is the purpose of this pull request?

This pull request:

• updates functions descriptions in math/base/special/cceil.
• The updated description is:

Round/Rounds each component of a double-precision complex floating-point number toward positive infinity.

• generates numbers outside the loop in C benchmarks.
• corrects indentation.

Related Issues

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None.

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No.

Other

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No.

Checklist

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• Read, understood, and followed the contributing guidelines.

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@stdlib-js/reviewers

[kgryte]

LGTM. Thanks, @gunjjoshi!