cairo-vm is a Rust implementation of the Cairo VM. Cairo (CPU Algebraic Intermediate Representation) is a programming language for writing provable programs, where one party can prove to another that a certain computation was executed correctly without the need for this party to re-execute the same program.
There is already a section above explaining how to compile a cairo program using the cairo compiler, there is no need to add the compilation command in this section
add --proof_mode