update dsl sample readme (#571)

Signed-off-by: Tihomir Surdilovic <[email protected]>

core/src/main/java/io/temporal/samples/dsl/README.md

@@ -5,8 +5,13 @@ This sample shows how to use a DSL on top of Temporal.
 The sample uses CNCF Serverless Workflow (serverlessworkflow.io) DSL and its Java SDK,
 which helps us parse the DSL into an object model as well as provides DSL validation.
 
-Since this is just a sample, this sample provides only partial implementation of the 
-entire [Serverless Workflow](https://serverlessworkflow.io/) DSL features.
+Note: Temporal helps you to focus on business logic. We handle the complexities of building scalable distributed systems so you can deliver reliable workflows faster. 
+Our approach helps you build the tooling you need, without restricting functionality. 
+As with all samples, use the following at your own risk. 
+Temporal does not endorse the use of CNCF Serverless Workflows; the following code is just an example. 
+As a rule, DSLs provide limited and restrictive functionality. 
+They are not suitable for full expressive development. 
+In many cases, it's better to build customized DSLs to optimize simplicity and domain targeting for your particular use case.
 
 This sample runs the following DSL workflows:
 1. [`customerapplication/workflow.yml`](../../../../../resources/dsl/customerapplication/workflow.yml)