Update pose.proto
Update pose.proto

"meters per second" should be corrected by "meters per square second".
ycool/apollo,jinghaomiao/apollo,xiaoxq/apollo,jinghaomiao/apollo,jinghaomiao/apollo,ycool/apollo,ycool/apollo,ApolloAuto/apollo,jinghaomiao/apollo,jinghaomiao/apollo,ycool/apollo,ycool/apollo,ApolloAuto/apollo,ApolloAuto/apollo,ApolloAuto/apollo,ApolloAuto/apollo,xiaoxq/apollo,xiaoxq/apollo,jinghaomiao/apollo,xiaoxq/apollo,xiaoxq/apollo,xiaoxq/apollo,ApolloAuto/apollo,ycool/apollo