updated docs;

Author: naman-msft

scenarios/azure-compute-docs/articles/virtual-machine-scale-sets/tutorial-use-custom-image-cli.md

@@ -41,7 +41,7 @@ The following example creates a Linux-based VM named *myVM* in the resource grou
 export RANDOM_ID=$(openssl rand -hex 3)
 export MY_RESOURCE_GROUP_NAME="myResourceGroup$RANDOM_ID"
 export REGION="eastus"
-export MY_VM_NAME="myVM"
+export MY_VM_NAME="myVM$RANDOM_ID"
 
 az group create --name $MY_RESOURCE_GROUP_NAME --location $REGION
 

scenarios/metadata.json

@@ -816,7 +816,15 @@
 
         ],
         "configurations": {
-            "permissions": []
+            "permissions": [],
+            "configurableParams": [
+                {
+                    "inputType": "textInput",
+                    "commandKey": "MY_VM_NAME",
+                    "title": "VM Name",
+                    "defaultValue": ""
+                }
+            ]
         }
     },
     {