Update u_high_availability.md
Update u_high_availability.md

fixing links
jitsni/gateway,DoruM/gateway,stanculescu/gateway,AdrianCozma/gateway,danibusu/gateway,danibusu/gateway,cmebarrow/gateway,michaelcretzman/gateway,michaelcretzman/gateway,cmebarrow/gateway,dpwspoon/gateway,dpwspoon/gateway,justinma246/gateway,cmebarrow/gateway,dpwspoon/gateway,jfallows/gateway,adrian-galbenus/gateway,sanjay-saxena/gateway,kaazing/gateway,adrian-galbenus/gateway,Anisotrop/gateway,danibusu/gateway,mjolie/gateway,Anisotrop/gateway,jitsni/gateway,justinma246/gateway,stanculescu/gateway,sanjay-saxena/gateway,nemigaservices/gateway,biddyweb/gateway,nemigaservices/gateway,cmebarrow/gateway,adrian-galbenus/gateway,sanjay-saxena/gateway,vmaraloiu/gateway,Anisotrop/gateway,vmaraloiu/gateway,DoruM/gateway,kaazing/gateway,chao-sun-kaazing/gateway,mjolie/gateway,biddyweb/gateway,irina-mitrea-luxoft/gateway,a-zuckut/gateway,michaelcretzman/gateway,a-zuckut/gateway,nemigaservices/gateway,jitsni/gateway,irina-mitrea-luxoft/gateway,jfallows/gateway,mjolie/gateway,justinma246/gateway,mgherghe/gateway,nemigaservices/gateway,jitsni/gateway,a-zuckut/gateway,danibusu/gateway,jfallows/gateway,mgherghe/gateway,sanjay-saxena/gateway,michaelcretzman/gateway,mjolie/gateway,chao-sun-kaazing/gateway,irina-mitrea-luxoft/gateway,a-zuckut/gateway,vmaraloiu/gateway,stanculescu/gateway,dpwspoon/gateway,biddyweb/gateway,AdrianCozma/gateway,AdrianCozma/gateway,DoruM/gateway,kaazing/gateway,DoruM/gateway,Anisotrop/gateway,biddyweb/gateway,justinma246/gateway,stanculescu/gateway,vmaraloiu/gateway,kaazing/gateway,mgherghe/gateway,chao-sun-kaazing/gateway,adrian-galbenus/gateway,mgherghe/gateway,AdrianCozma/gateway,irina-mitrea-luxoft/gateway,jfallows/gateway,chao-sun-kaazing/gateway