fix readme code

[kokeiro001]

Doneness:

• Build is okay - I made sure that this change is building successfully.
• No Bugs - I made sure that this change is working properly as expected. It doesn't have any bugs that you are aware of.
• Branching - If this is not a hotfix, I am making this request against the develop branch

Copying and pasting the sample code from the readme did not work because of a compile error, so I fixed it.