Issue 23212 - Improve documentation of rt/aApply

[dkorpel]

No description provided.

[dlang-bot]

Thanks for your pull request and interest in making D better, @dkorpel! We are looking forward to reviewing it, and you should be hearing from a maintainer soon.
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Bugzilla references

Auto-close	Bugzilla	Severity	Description
✗	23212	enhancement	missing documentation for druntime hooks

Testing this PR locally

If you don't have a local development environment setup, you can use Digger to test this PR:

dub run digger -- build "master + druntime#3865"

[thewilsonator]

otherwise looks good

[RazvanN7]

Documentation tester:

src/rt/aApply.d(24): Warning: Ddoc: function declaration has no parameter 'c'
src/rt/aApply.d(507): Warning: Ddoc: function declaration has no parameter 'i'
src/rt/aApply.d(507): Warning: Ddoc: function declaration has no parameter 'c'

It seems that you cannot put the delegate parameter of a delegate declaration in the documentation. Maybe you can refer to it without actually putting it in the Params section.