Fix method comment typo
Fix method comment typo

emplate -> Template

Change-Id: I3ed9e39c5a69b5235066af5409032a253f6a2769

olivierlemasle/murano,olivierlemasle/murano,NeCTAR-RC/murano,olivierlemasle/murano,openstack/murano,DavidPurcell/murano_temp,NeCTAR-RC/murano,satish-avninetworks/murano,DavidPurcell/murano_temp,openstack/murano,satish-avninetworks/murano,olivierlemasle/murano,DavidPurcell/murano_temp,DavidPurcell/murano_temp,satish-avninetworks/murano,NeCTAR-RC/murano,satish-avninetworks/murano,NeCTAR-RC/murano