fix comments and parameter typo

libs/core/_locales/core-jsdoc-strings.json

@@ -180,6 +180,7 @@
   "music.noteFrequency": "Gets the frequency of a note.",
   "music.noteFrequency|param|name": "the note name",
   "music.playTone": "Plays a tone through ``speaker`` for the given duration.",
+  "music.playTone|param|frequency": "pitch of the tone to play in Hertz (Hz)",
   "music.playTone|param|ms": "tone duration in milliseconds (ms)",
   "music.rest": "Rests (plays nothing) for a specified time through pin ``P0``.",
   "music.rest|param|ms": "rest duration in milliseconds (ms)",

libs/core/shims.d.ts

@@ -555,7 +555,7 @@ declare namespace music {
     //% help=music/play-tone weight=90
     //% blockId=device_play_note block="play|tone %note=device_note|for %duration=device_beat" icon="\uf025" blockGap=8
     //% parts="speaker" async shim=music::playTone
-    function playTone(freqency: number, ms: number): void;
+    function playTone(frequency: number, ms: number): void;
 }
 declare namespace pins {