Uart sample has extra parameter in uart_driver_install

[nkolban]

If we look at this source line in the code ...

https://github.com/espressif/esp-idf/blob/master/components/driver/include/driver/uart.h#L751

We see that there is currently an extra parameter at the end of the call to uart_driver_install. This parameter is supplied as RINGBUF_TYPE_BYTEBUF. Unfortunately, this parameter doesn't map to the signature of the function. I believe that the parameter needs to be removed from the sample.