Minor typos

This is less about nitpicking language but rather about signalling interest in your repository. I stumbled over it from StackExchange because the promised functionality is exactly what I'm interested in, now that I've finally bought a MIDI keyboard to use with my PC (two decades ago I used MIDI keyboards too, but only in connection with hardware syntesizers).

Apart from general controlling my desktop (GNOME) or using the sliders for mixing audio sources in video conferences I'm sure I'll make something of your tool when using the keyboard for input in my (FLOSS) notation software.