Fix doc about removing node BGP peer
Fix doc about removing node BGP peer

Signed-off-by: depay <d75c074599ff6bdecf06069d103892ad343ed484@163.com>

projectcalico/calico-containers,insequent/calico-docker,quater/calico-containers,projectcalico/calico-containers,insequent/calico-docker,projectcalico/calico-docker,caseydavenport/calico-docker,Metaswitch/calico-docker,quater/calico-containers,Metaswitch/calico-docker,caseydavenport/calico-containers,caseydavenport/calico-containers,caseydavenport/calico-docker,projectcalico/calico-docker,projectcalico/calico-containers,caseydavenport/calico-containers