resources.md in cfn-guardian-0.7.10

- old
+ new

@@ -37,9 +37,10 @@
 | Resource Group              | Require Keys     |
 | --------------------------- | ---------------- |
 | ApiGateway                  | Id               |
 | AmazonMQBroker              | Id               |
 | AutoScalingGroup            | Id               |
+| DocumentDBCluster           | Id               |
 | DynamoDBTable               | Id               |
 | ElastiCacheReplicationGroup | Id               |
 | ElasticFileSystem           | Id               |
 | Ec2Instance                 | Id               |
 | EcsCluster                  | Id               |
\ No newline at end of file