Documentation: vfio-mediated-device.txt: Fix typos

Correct spelling mistakes in vfio-mediates-device.txt to make
documentation clear.
Signed-off-by: Tamara Diaconita <diaconita.tamara@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Documentation/vfio-mediated-device.txt

@@ -380,7 +380,7 @@ card.
    /dev/ttyS1, UART: 16550A, Port: 0xc150, IRQ: 10
    /dev/ttyS2, UART: 16550A, Port: 0xc158, IRQ: 10
 
-6. Using a minicom or any terminal enulation program, open port /dev/ttyS1 or
+6. Using minicom or any terminal emulation program, open port /dev/ttyS1 or
    /dev/ttyS2 with hardware flow control disabled.
 
 7. Type data on the minicom terminal or send data to the terminal emulation