syntax fix

Author: DrisDary

samples/function-app-storage-http/dotnet/terraform/deploy.sh

@@ -117,5 +117,5 @@ if $AZ functionapp deploy \
     --type zip 1> /dev/null; then
 	echo "Function app [$FUNCTION_APP_NAME] deployed successfully."
 else
-	echo "Warning: Failed to deploy function app [$FUNCTION_APP_NAME].
+	echo "Warning: Failed to deploy function app [$FUNCTION_APP_NAME]."
 fi