fixed clone command in README
fixed clone command in README

MjAbuz/Kibana,MjAbuz/Kibana,melexis/kibana,melexis/kibana,alphagov/Kibana,rashidkpc/kibana2,alphagov/Kibana,CSGOpenSource/Kibana2,rashidkpc/kibana2,MjAbuz/Kibana,CSGOpenSource/Kibana2,CSGOpenSource/Kibana2,rashidkpc/kibana2,MjAbuz/Kibana,rashidkpc/kibana2,melexis/kibana,alphagov/Kibana