Rollup merge of #27881 - jotomicron:patch-1, r=steveklabnik
Rollup merge of #27881 - jotomicron:patch-1, r=steveklabnik

Added the cost of the edge 3 -> 4 on the example in the module documentation

graydon/rust,dwillmer/rust,aidancully/rust,dwillmer/rust,dwillmer/rust,aidancully/rust,aidancully/rust,graydon/rust,dwillmer/rust,aidancully/rust,graydon/rust,GBGamer/rust,GBGamer/rust,GBGamer/rust,graydon/rust,GBGamer/rust,dwillmer/rust,aidancully/rust,aidancully/rust,GBGamer/rust,dwillmer/rust,GBGamer/rust,GBGamer/rust,GBGamer/rust,dwillmer/rust,graydon/rust,dwillmer/rust,graydon/rust