README.md: fix multiline.pow that I just broke :-/

README.md

@@ -117,6 +117,7 @@ Let's write a `multiline.pow` file with the following content:
 
 ```bash
 kapow route add /log_and_love - <<- 'EOF'
+	echo "[$(date)] and stuff" >> stuff.log
 	echo love | response /body
 EOF
 ```