MIDICC_CV and CV_MIDICC: Use 1-16 instead of 0-15 for default MIDI CC numbers.

src/core/CV_MIDICC.cpp

@@ -68,7 +68,7 @@ struct CV_MIDICC : Module {
 
 	void onReset() override {
 		for (int id = 0; id < 16; id++) {
-			learnedCcs[id] = id;
+			learnedCcs[id] = id + 1;
 		}
 		learningId = -1;
 		midiOutput.reset();

src/core/MIDICC_CV.cpp

@@ -62,7 +62,7 @@ struct MIDICC_CV : Module {
 		}
 		learningId = -1;
 		for (int id = 0; id < 16; id++) {
-			learnedCcs[id] = id;
+			learnedCcs[id] = id + 1;
 		}
 		midiInput.reset();
 		smooth = true;