Update README.md

Author: TheKikGen

README.md

@@ -74,7 +74,7 @@ The second way is to activate the configuration menu on the serial port with the
 
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-This sysex enables the serail configuration menu.  Immediatly after sending this sequence with your prefered midi software, the interface will reboot in CDC serial COM mode, allowing you to open a terminal to configure easily USBMIDIKLIK. 
+This sysex enables the serial configuration menu.  Immediatly after sending this sequence with your prefered midi software, the interface will reboot in CDC serial COM mode, allowing you to open a terminal to configure easily USBMIDIKLIK. 
 You can use any software like TERATERM, on Windows, or "screen" on MacOs.  The bauds rate must be set to 115200.
 
 The following menu should appear after connecting to the right serial USB port , and pressing ENTER :