docs: Fix type in gcloud docs
@@ -40,7 +40,7 @@ Use this provider like any other DNS Provider:
{% highlight js %}
var REG_NAMECOM = NewRegistrar("name.com","NAMEDOTCOM");
-var GCLOUD = NewDnsProvider("gcloud", GCLOUD);
+var GCLOUD = NewDnsProvider("gcloud", "GCLOUD");
D("example.tld", REG_NAMECOM, DnsProvider(GCLOUD),
A("test","1.2.3.4")
