update CloudFormation/elb.yaml.

CloudFormation/elb.yaml

@@ -18,7 +18,7 @@ Resources:
         - Type: forward
           TargetGroupArn: !Ref ALBTargetGroup
       LoadBalancerArn: !Ref ApplicationLoadBalancer
-      Port: '80'
+      Port: '81'
       Protocol: HTTP
     Metadata:
       'AWS::CloudFormation::Designer':