show that chomp doesn't remove spaces in example

[WebFreak001]

It was written in the docs, but I think the example shows it more clearly and doesn't require the user to test it if in doubt anymore.

[dlang-bot]

Thanks for your pull request, @WebFreak001!

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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 + phobos#8823"

[WebFreak001]

CI failure unrelated:

⚠️ Failed to start an instance: FAILED_PRECONDITION: Monthly free compute limit exceeded!