Add example in the alternative in std::mem::transmute docs
Add example in the alternative in std::mem::transmute docs

It is safer to use `from_ne_bytes` to convert raw bytes to type like u32.

aidancully/rust,aidancully/rust,aidancully/rust,graydon/rust,aidancully/rust,graydon/rust,graydon/rust,aidancully/rust,graydon/rust,graydon/rust,aidancully/rust,graydon/rust