fix(stubs): include doc comments in __construct() stubs

[Xenira]

Refs: #497

Description

Doc comments were not exported for constructors

Checklist

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• I have read the contribution guidelines.
• I have added tests that prove my code works as expected.
• I have added documentation if applicable.
• I have added a migration guide if applicable.

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[coveralls]

Pull Request Test Coverage Report for Build 16199229403

Details

• 0 of 2 (0.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.01%) to 22.331%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
crates/macros/src/function.rs	0	2	0.0%

Totals
Change from base Build 16179805302:	-0.01%
Covered Lines:	870
Relevant Lines:	3896

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💛 - Coveralls