std::net::UdpSocket documentation about returned data is misleading

[frewsxcv]

rust/src/libstd/net/udp.rs

Lines 67 to 68 in c4b23ae

	/// Sends data on the socket to the given address. Returns nothing on
	/// success.

Returns nothing on success.

Considering the return type is Result<usize, Error>, it doesn't seem like 'nothing' is an option