Fix typo on migrate-machines command at Get Started doc
Fix typo on migrate-machines command at Get Started doc

mfranczy/prototype,vmindru/prototype,pcahyna/leapp-to-prototype,GAZDOWN/prototype,leapp-to/prototype,ncoghlan/prototype,leapp-to/prototype,GAZDOWN/leapp,vmindru/prototype,vinzenz/prototype,ncoghlan/prototype,vinzenz/prototype,pcahyna/leapp-to-prototype,mfranczy/prototype,vinzenz/prototype,GAZDOWN/leapp,mfranczy/prototype,GAZDOWN/prototype,pcahyna/leapp-to-prototype,leapp-to/prototype,pcahyna/leapp-to-prototype,leapp-to/prototype,mfranczy/prototype,vinzenz/prototype,ncoghlan/prototype,vmindru/prototype,vmindru/prototype,GAZDOWN/prototype,ncoghlan/prototype,GAZDOWN/prototype