Update index.html

rename `eq` to `eq?`, to test trailing `?`

Author: JohanWiltink

index.html

@@ -116,7 +116,7 @@ <h1>
 chunk = \ a b xs . row-s a (colS b xs)
 append = \ as bs . null as bs (cons (head as) (append (tail as) bs))
 concat = foldr append nil
-eq = \ a b . is-z a (is-z b) (is-z b false (eq (pred a) (pred b)))
+eq? = \ a b . is-z a (is-z b) (is-z b false (eq? (pred a) (pred b)))
 all = foldr (\ a b . a b false) true
 allf = \ f xs . all (map f xs)
 </textarea>