kits: Fix a few missed spelling issues

src/kits/game/GameSoundBuffer.cpp

@@ -98,7 +98,7 @@ GameSoundBuffer::GameSoundBuffer(const gs_audio_format * format)
 }
 
 
-// Play must stop before the distructor is called; otherwise, a fatel
+// Play must stop before the distructor is called; otherwise, a fatal
 // error occures if the playback is in a subclass.
 GameSoundBuffer::~GameSoundBuffer()
 {

src/kits/game/GameSoundDevice.cpp

@@ -195,7 +195,7 @@ BGameSoundDevice::ReleaseBuffer(gs_id sound)
 
 	if (fSounds[sound - 1]) {
 		// We must stop playback befor destroying the sound or else
-		// we may receive fatel errors.
+		// we may receive fatal errors.
 		fSounds[sound - 1]->StopPlaying();
 
 		delete fSounds[sound - 1];

src/kits/media/Notifications.cpp

@@ -83,7 +83,7 @@ Unregister(const BMessenger& notifyHandler, const media_node& node,
 }
 
 
-/*!	Transmits the error code specified by \a what to anyone whose receiving
+/*!	Transmits the error code specified by \a what to anyone who's receiving
 	notifications from this node. If \a info isn't \c NULL, it's used as a
 	model message for the error notification message.
 	The message field "be:node_id" will contain the node ID.