README.md in cfn-guardian-0.7.9 vs README.md in cfn-guardian-0.7.10

@@ -27,9 +27,10 @@
 - ApiGateway
 - Application Targetgroups
 - Network TargetGroups
 - AutoScalingGroups
 - CloudFront Distributions
+- DocumentDB Clusters
 - DynamoDB Tables
 - EC2 Instances
 - ECS Clusters
 - ECS Services
 - EFS
\ No newline at end of file