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Rollup merge of #123770 - tomokinat:master, r=joboet

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Correct broken link in core::pin doc

This is a minor correction to the doc, which fails to link `Unpin` trait.

Before (rendered):
![before](https://github.com/rust-lang/rust/assets/49511064/c4f2f94d-91ea-4cee-be69-b0053453194a)

After (rendered):
![before](https://github.com/rust-lang/rust/assets/49511064/847068f8-73b2-4acb-ab78-3351ffe5b0a0)
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Matthias Krüger 2024-04-11 20:20:50 +02:00 committed by GitHub
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library/core/src/pin.rs
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@ -379,11 +379,11 @@
//!
//! Exposing access to the inner field which you want to remain pinned must then be carefully
//! considered as well! Remember, exposing a method that gives access to a
//! <code>[Pin]<[&mut] InnerT>></code> where `InnerT: [Unpin]` would allow safe code to trivially
//! move the inner value out of that pinning pointer, which is precisely what you're seeking to
//! prevent! Exposing a field of a pinned value through a pinning pointer is called "projecting"
//! a pin, and the more general case of deciding in which cases a pin should be able to be
//! projected or not is called "structural pinning." We will go into more detail about this
//! <code>[Pin]<[&mut] InnerT>></code> where <code>InnerT: [Unpin]</code> would allow safe code to
//! trivially move the inner value out of that pinning pointer, which is precisely what you're
//! seeking to prevent! Exposing a field of a pinned value through a pinning pointer is called
//! "projecting" a pin, and the more general case of deciding in which cases a pin should be able
//! to be projected or not is called "structural pinning." We will go into more detail about this
//! [below][structural-pinning].
//!
//! # Examples of address-sensitive types