fix example (#177)

quickstart/201-function-app/outputs.tf

@@ -0,0 +1,11 @@
+output "resource_group_name" {
+  value = azurerm_resource_group.default.name
+}
+
+output "storage_account_name" {
+  value = azurerm_storage_account.default.name
+}
+
+output "linux_function_app_name" {
+  value = azurerm_linux_function_app.main.name
+}