update CloudFormation/Memcached.yaml.

CloudFormation/Memcached.yaml

@@ -21,7 +21,7 @@ Resources:
       Port: '11211'
       CacheNodeType: cache.t2.micro
       VpcSecurityGroupIds:
-        - !Ref dbsgid
+        - !Ref MemcacheSecurity
       CacheSubnetGroupName: !Ref cachegroupa
     Metadata:
       'AWS::CloudFormation::Designer':