doc: swap the install sequence about nvidia driver and nvidia-docker.
doc: swap the install sequence about nvidia driver and nvidia-docker.

ycool/apollo,ycool/apollo,jinghaomiao/apollo,xiaoxq/apollo,jinghaomiao/apollo,ApolloAuto/apollo,ApolloAuto/apollo,jinghaomiao/apollo,jinghaomiao/apollo,ycool/apollo,ApolloAuto/apollo,xiaoxq/apollo,ApolloAuto/apollo,xiaoxq/apollo,wanglei828/apollo,wanglei828/apollo,ApolloAuto/apollo,xiaoxq/apollo,wanglei828/apollo,jinghaomiao/apollo,ycool/apollo,ApolloAuto/apollo,xiaoxq/apollo,jinghaomiao/apollo,xiaoxq/apollo,ycool/apollo,ycool/apollo,wanglei828/apollo,wanglei828/apollo,wanglei828/apollo