man/docker-build.1:fix --memory-swamp and --network, removing = between long-form opts and values
man/docker-build.1:fix --memory-swamp and --network, removing = between long-form opts and values

Signed-off-by: Des Preston <7356fbf79964ee0ea537a0078a4e1768468ddbd3@gmail.com>

thaJeztah/cli,cpuguy83/cli,docker/cli,docker/cli,thaJeztah/cli,cpuguy83/cli