Fix short hand struct doc

[phungleson]

Don't want to discredit @HnGiang effort on this issue.

I just want to lend a hand to fix this issue #38830, it is a very nice feature and is seemingly completed.

Fixes #39096

r? @steveklabnik

[rust-highfive]

Thanks for the pull request, and welcome! The Rust team is excited to review your changes, and you should hear from @steveklabnik (or someone else) soon.

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[ghost]

Thanks @phungleson for help me fix issue #38830

[steveklabnik]

I think this looks great, thank you! @z1mvader wanted to lend a hand, so let's see what they think. I'm feeling good about this PR, though!

[ghost]

I'm no authority here but I think it's all right :)

[steveklabnik]

@bors: r+ rollup

Great! Thanks so much @HnGiang for getting this going, and to @phungleson for keeping it going! ❤️

[bors]

📌 Commit 4ddb56b has been approved by steveklabnik