Documentation for `mpsc::Sender` should reflect its `Sync` trait

[MikeWalrus]

Location

rust/library/std/src/sync/mpsc/mod.rs

Lines 306 to 309 in a07bc13

	/// The sending-half of Rust's asynchronous [`channel`] type. This half can only be
	/// owned by one thread, but it can be cloned to send to other threads.
	///
	/// Messages can be sent through this channel with [`send`].

Summary

Given that Sync is now implemented for Sender in #111087, the documentation for Sender should no longer mention that it's meant to be cloned. In my opinion, it's better to be consistent with the documentation for SyncSender, which has been Sync.

rust/library/std/src/sync/mpsc/mod.rs

Lines 353 to 355 in a07bc13

	/// The sending-half of Rust's synchronous [`sync_channel`] type.
	///
	/// Messages can be sent through this channel with [`send`] or [`try_send`].

[gurry]

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