add to Monad ifM example

I found this section pretty confusing, but cleared up my misunderstanding quickly in the console. This extra line in the example might help make it clear to people what is going on.
typelevel · Mar 1, 2017 · d8b28fa · d8b28fa
1 parent a0c6f59
commit d8b28fa
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/docs/src/main/tut/typeclasses/monad.md b/docs/src/main/tut/typeclasses/monad.md
@@ -111,7 +111,9 @@ statement into the monadic context.
 ```tut:book
 import cats.implicits._
 
-Monad[List].ifM(List(true, false, true))(List(1, 2), List(3, 4))
+Monad[List].ifM(List(true, false, true))(ifTrue = List(1, 2), ifFalse = List(3, 4))
+
+Monad[List].ifM(List(true, false, false))(ifTrue = List(1, 2), ifFalse = List(3, 4))
 ```
 
 ### Composition