Docs: added check-target command to leapp-tool page
Docs: added check-target command to leapp-tool page

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