Fixed example in documentation
Fixed example in documentation

Added the cost of the edge 3 -> 4 on the example in the module documentation
aidancully/rust,GBGamer/rust,aidancully/rust,dwillmer/rust,GBGamer/rust,dwillmer/rust,graydon/rust,GBGamer/rust,dwillmer/rust,GBGamer/rust,GBGamer/rust,graydon/rust,aidancully/rust,GBGamer/rust,graydon/rust,dwillmer/rust,dwillmer/rust,graydon/rust,graydon/rust,dwillmer/rust,GBGamer/rust,graydon/rust,dwillmer/rust,dwillmer/rust,aidancully/rust,aidancully/rust,aidancully/rust,GBGamer/rust