Correct typos in comments and documentation

Author: per1234

README.adoc

@@ -5,7 +5,7 @@
 
 image:https://github.com/{repository-owner}/{repository-name}/actions/workflows/spell-check.yml/badge.svg["Spell Check status", link="https://github.com/{repository-owner}/{repository-name}/actions/workflows/spell-check.yml"]
 
-This library allows an Arduino board with USB capabilites to act as a MIDI instrument over USB. The library is based on PluggableUSB, so is only compatible with IDE 1.6.6 and nightly builds (AVR core > 1.6.8, SAM core > 1.6.4, SAMD core > 1.6.1)
+This library allows an Arduino board with USB capabilities to act as a MIDI instrument over USB. The library is based on PluggableUSB, so is only compatible with Arduino IDE 1.6.6 and newer.
 
 Furthermore, since PluggableUSB only targets boards with native USB capabilities, this library only supports these boards (eg. Leonardo, Micro, Due, Zero and so on)
 

keywords.txt

@@ -1,5 +1,5 @@
 #######################################
-# Syntax Coloring Map For Keyboard
+# Syntax Coloring Map For MIDIUSB
 #######################################
 
 #######################################

library.properties

@@ -2,7 +2,7 @@ name=MIDIUSB
 version=1.0.5
 author=Gary Grewal, Arduino
 maintainer=Arduino <[email protected]>
-sentence=Allows an Arduino board with USB capabilites to act as a MIDI instrument over USB.
+sentence=Allows an Arduino board with USB capabilities to act as a MIDI instrument over USB.
 paragraph=
 category=Device Control
 url=http://www.arduino.cc/en/Reference/MIDIUSB

src/MIDIUSB.h

@@ -123,15 +123,15 @@ typedef struct
 	uint8_t jackStrIndex;
 } MIDIJackOutDescriptor;
 
-/// MIDI Jack EndPoint Descriptor, common to midi in and out jacks.
+/// MIDI Jack EndPoint Descriptor, common to MIDI in and out jacks.
 typedef struct
 {
 	EndpointDescriptor len;		// 9
 	uint8_t refresh;		// 4
 	uint8_t sync;
 } MIDI_EPDescriptor;
 
-/// MIDI Jack  EndPoint AudioControl Descriptor, common to midi in and out ac jacks.
+/// MIDI Jack EndPoint AudioControl Descriptor, common to MIDI in and out ac jacks.
 typedef struct
 {
 	uint8_t len;		// 5
@@ -151,7 +151,7 @@ typedef struct
 	uint16_t wTotalLength;
 } MIDI_ASInterfaceDescriptor;
 
-/// Top Level MIDI Descriptor used to create a Midi Interface instace \see MIDI_::getInterface()
+/// Top Level MIDI Descriptor used to create a MIDI Interface instance \see MIDI_::getInterface()
 typedef struct
 {
 	//	IAD
@@ -197,7 +197,7 @@ typedef struct
 #define D_CDCCS4(_subtype,_d0)		{ 4, 0x24, _subtype, _d0 }
 
 #ifndef DOXYGEN_ARD
-// the following would confuse doxygen documentation tool, so skip in that case for autodoc build
+// the following would confuse the Doxygen documentation tool, so skip in that case for autodoc build
 _Pragma("pack()")
 
 #define WEAK __attribute__ ((weak))
@@ -206,25 +206,25 @@ _Pragma("pack()")
 
 /**
  	 Concrete MIDI implementation of a PluggableUSBModule
- 	 By default, will define one midi in and one midi out enpoints.
+ 	 By default, will define one MIDI in and one MIDI out endpoints.
  */
 class MIDI_ : public PluggableUSBModule
 {
 // private:
 // 	RingBuffer *_midi_rx_buffer;
 private:
-	void accept(void); 					///< Accepts a midi packet, \see MIDI_::read()
+	void accept(void); 					///< Accepts a MIDI packet, \see MIDI_::read()
 	EPTYPE_DESCRIPTOR_SIZE epType[2];   ///< Container that defines the two bulk MIDI IN/OUT endpoints types
 
 protected:
   // Implementation of the PUSBListNode
 
-  /// Creates a MIDIDescriptor midi interface and sollicit USBDevice to send control to it.
+  /// Creates a MIDIDescriptor MIDI interface and solicits USBDevice to send control to it.
   ///   \see USBDevice::SendControl()
   int getInterface(uint8_t* interfaceNum);
   /// Current implementation just returns 0
   int getDescriptor(USBSetup& setup);
-  /// Optional interface usb setup callback, current implementation returns false
+  /// Optional interface USB setup callback, current implementation returns false
   bool setup(USBSetup& setup);
   /// MIDI Device short name, defaults to "MIDI" and returns a length of 4 chars
   uint8_t getShortName(char* name);
@@ -236,7 +236,7 @@ class MIDI_ : public PluggableUSBModule
 	uint32_t available(void);
 	/// Reads a new MIDI message from USB
 	midiEventPacket_t read(void);
-	/// Flushes TX midi channel
+	/// Flushes TX MIDI channel
 	void flush(void);
 	/// Sends a MIDI message to USB
 	void sendMIDI(midiEventPacket_t event);

src/pitchToNote.h

@@ -94,7 +94,7 @@
 #define pitchB0  23
 #define pitchB0b 22
 #define pitchA0  21
-/// Full 88 key range note pitch high to low midi byte value mapping array
+/// Full 88 key range note pitch high to low MIDI byte value mapping array
 const int notePitch[] = {pitchC8,
                                pitchB7, pitchB7b, pitchA7, pitchA7b, pitchG7, pitchG7b, pitchF7, pitchE7, pitchE7b, pitchD7, pitchD7b, pitchC7,
                                pitchB6, pitchB6b, pitchA6, pitchA6b, pitchG6, pitchG6b, pitchF6, pitchE6, pitchE6b, pitchD6, pitchD6b, pitchC6,