Fix README.md

Author: engboris

README.md

@@ -65,10 +65,10 @@ a1 = galaxy
     -a(0:W q1) +a(W q2).
 end
 
-show process #e.   #a1. %kill. end
-show process #000. #a1. %kill. end
-show process #010. #a1. %kill. end
-show process #110. #a1. %kill. end
+show process #e.   #a1. &kill. end
+show process #000. #a1. &kill. end
+show process #010. #a1. &kill. end
+show process #110. #a1. &kill. end
 ```
 
 More examples can be found in `examples/`.