Remove instructions for scoop
Remove instructions for scoop

Those instructions are outdated and are confusing users and
causing error. Pointing to the latest exe file instead

Signed-off-by: Ivana Yovcheva (VMware) <86e73595f14df5226ef437d57671288872a8681c@vmware.com>

itscaro/faas-cli,itscaro/faas-cli,itscaro/faas-cli