add GCP regions

Author: mletalie

modules/sdpolicy-am-regions-availability-zones.adoc

@@ -52,7 +52,7 @@ The following Google Cloud regions are currently supported:
 * europe-west4, Eemshaven, Netherlands
 * europe-west6, Zürich, Switzerland
 * europe-west8, Milan, Italy
-* europe-west12,Turin, Italy
+* europe-west12, Turin, Italy
 * europe-southwest1, Madrid, Spain
 * northamerica-northeast1, Montréal, Québec, Canada
 * southamerica-east1, Osasco (São Paulo), Brazil