Auto merge of #7848 - Veykril:patch-1, r=xFrednet
Auto merge of #7848 - Veykril:patch-1, r=xFrednet

Fix doc heading of `transmute_num_to_bytes`

changelog: none

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