endpoint:set [ENDPOINT] does not work when an ENDPOINT value is provided

[squdgy]

Despite the readme showing that "endpoint:set [ENDPOINT] will accept an endpoint value, it doesn't actually work. When an endpoint is provided, it still goes into the list menu; and if you don't choose any of the values in the list, it sets the endpoint to blank instead of the provided value.

[andreyjamer]

@squdgy There was a typo in the code. I created PR with the fix #44