oracle-primenumber/README.md

[mshearer0]

In oracle-primenumber/README.md:

"We can then see the state wrapping the 5th prime (11) in our vault by running:

run vaultQuery contractStateType: net.corda.examples.oracle.base.states.PrimeState"

code refactored to:

run vaultQuery contractStateType: net.corda.samples.oracle.states.PrimeState