update resource keys to match comments (streamnative#879)

Author: asher-goldberg

pkg/pulsar/utils/resources.go

@@ -28,9 +28,9 @@ func NewDefaultResources() *Resources {
 		// Default cpu is 1 core
 		CPU: 1,
 		// Default memory is 1GB
-		Disk: 1073741824,
+		RAM: 1073741824,
 		// Default disk is 10GB
-		RAM: 10737418240,
+		Disk: 10737418240,
 	}
 
 	return resources