JavaScript (v3): Textract - Fix non-unique domain prefix in textract-react CFN template.

Author: cpyle0819

javascriptv3/example_code/cross-services/textract-react/setup.yaml

@@ -201,7 +201,19 @@ Resources:
   textractcognitodemoidtextractcognitodemodomainEBB6899F:
     Type: AWS::Cognito::UserPoolDomain
     Properties:
-      Domain: textract-demo
+      Domain:
+        Fn::Join:
+          - '-'
+          - - textract-react
+            - Fn::Select:
+              - 4
+              - Fn::Split:
+                - '-'
+                - Fn::Select:
+                  - 2
+                  - Fn::Split:
+                    - /
+                    - Ref: AWS::StackId
       UserPoolId:
         Ref: textractcognitodemoidA350B90F
     Metadata: