Fixed spelling errors - occurance to occurence

Change-Id: Ie0550a1168448d85043d9b4943edd732b1f10307
Fixed Spelling errors - compatability to compatibility

Change-Id: I9da380cef8b798e21fd35882763bd05f5cf1e33e
Merge "Fixed spelling errors - occurance to occurence"
Merge "Fixed Spelling errors - compatability to compatibility"