Update readme.md

Author: jovanpop-msft

samples/manage/synapse-analytics/readme.md

@@ -9,4 +9,10 @@ This template deploys Azure Synapse workspace with underlying Data Lake Storage.
 <img src="https://raw.githubusercontent.com/Azure/azure-quickstart-templates/master/1-CONTRIBUTION-GUIDE/images/visualizebutton.png"/>
 </a>
 
-`Tags: Azure, Synapse, Analytics`
+Enter subscription, resource group, region, and sql username/password in the following form:
+
+![Create Synapse workspace](media/create-synapse-workspace-template.png)
+
+If all information are valid, after 3-5 min you will get your workspace.
+
+`Tags: Azure, Synapse, Analytics`