Rename part 2 in the guide from "Functions" to "Patterns"
Rename part 2 in the guide from "Functions" to "Patterns"

google/codeworld,pranjaltale16/codeworld,alphalambda/codeworld,pranjaltale16/codeworld,pranjaltale16/codeworld,alphalambda/codeworld,google/codeworld,alphalambda/codeworld,google/codeworld