Update RMG example liquid_phase with multiplicity label
Update RMG example liquid_phase with multiplicity label

nyee/RMG-Py,comocheng/RMG-Py,nickvandewiele/RMG-Py,pierrelb/RMG-Py,chatelak/RMG-Py,chatelak/RMG-Py,nickvandewiele/RMG-Py,comocheng/RMG-Py,nyee/RMG-Py,enochd/RMG-Py,pierrelb/RMG-Py,enochd/RMG-Py