Fix typos in Readme
Fix typos in Readme

Found a few spelling mistakes - 
`layourts` →`layouts`
`submiting` → `submitting`
yjkim1701/cmt-mgr,VikramTiwari/mean,tmrotz/brad,tmrotz/brad,yjkim1701/cmt-mgr,tmrotz/brad,Peretus/test-mean,VikramTiwari/mean,Peretus/test-mean