Spelling mistake corrected
Spelling mistake corrected

Spelling of Contibuting changed to Contributing

Closes-Bug: #1553623

Change-Id: I45c6aad7f893e30ba633591e6089b8ef0b70a67d

DavidPurcell/murano_temp,openstack/murano,NeCTAR-RC/murano,openstack/murano,DavidPurcell/murano_temp,DavidPurcell/murano_temp,NeCTAR-RC/murano,NeCTAR-RC/murano,DavidPurcell/murano_temp,NeCTAR-RC/murano