Add negative example

VL2/content/VL2_currying5.tex

@@ -12,5 +12,8 @@ Did you just notice the braces? They are \textbf{very} important! So, currying i
 \begin{haskellcode}
 f :: Int -> Int -> Int
 f :: Int -> (Int -> Int)
+
+-- but this is NOT the same
+f :: (Int -> Int) -> Int
 \end{haskellcode}
 On the other hand function application is \emph{left}-associative, so \hinline{f 3 2} is just a shorthand of \hinline{(f 3) 2}. Makes sense?