Revise application testing instructions in guide

Updated the deployment guide to reference a sample workflow for testing the application instead of specific Informix queries.

Author: Thanusree-Microsoft

docs/DeploymentGuide.md

@@ -222,7 +222,7 @@ Additional Steps
 
 ## Running the application
 
-To help you get started, sample Informix queries have been included in the data/informix/functions and data/informix/simple directories. You can choose to upload these files to test the application.
+To help you get started, here's the [Sample Workflow](./SampleWorkflow.md) you can follow to try it out.
 
 ## Environment configuration for local development & debugging
 > Set APP_ENV in your .env file to control Azure authentication. Use dev to enable to use Azure CLI credential, Prod to enable Managed Identity (for production). **Ensure you're logged in via az login when using dev in local**.