"wrong" info in docs -> FM synth, harmonicity :)

[soundnerds]

Hi Tone people!

Love your work. I'm sitting and have just started learning, and would like to inform you, that I believe I found a small typo in the doc.

https://tonejs.github.io/docs/14.7.77/FMSynth#harmonicity

It's written as if one creates an AMSynth where I guess it would make more sense to create an FMSynth, if people where copy/pasting the example :)

Have a nice evening! :)

Best, Lasse