Merge pull request #1086 from carstenosu/patch-1

Update aws-properties-appflow-flow-task.md

Author: rachfop

doc_source/aws-properties-appflow-flow-task.md

@@ -63,7 +63,7 @@ To declare this entity in your AWS CloudFormation template, use the following sy
  Specifies the particular task implementation that Amazon AppFlow performs\.   
 *Required*: Yes  
 *Type*: String  
-*Allowed values*: `Arithmetic | Filter | Map | Mask | Merge | Truncate | Validate`  
+*Allowed values*: `Arithmetic | Filter | Map | Map_all | Mask | Merge | Truncate | Validate`  
 *Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)
 
 ## See also<a name="aws-properties-appflow-flow-task--seealso"></a>