fix pgadmin workstation name (#2088)
fix pgadmin workstation name (#2088)

The generated name did not follow the pattern of the other.
hnquang112/laradock,bestlong/laradock,bestlong/laradock,luciano-jr/laradock,jinnawat/laradock,jinnawat/laradock,zuohuadong/laradock,bestlong/laradock,bestlong/laradock,jinnawat/laradock,hnquang112/laradock,jinnawat/laradock,zuohuadong/laradock,zuohuadong/laradock,LaraDock/laradock,hnquang112/laradock,zuohuadong/laradock,bestlong/laradock,luciano-jr/laradock,hnquang112/laradock