Typo fix

iterator_to_array is not a method, it's a function.

Author: ABRAHAM Morgan

components/finder.rst

@@ -53,7 +53,7 @@ the Finder instance.
 
     A Finder instance is a PHP :phpclass:`Iterator`. So, in addition to iterating over the
     Finder with ``foreach``, you can also convert it to an array with the
-    :phpfunction:`iterator_to_array` method, or get the number of items with
+    :phpfunction:`iterator_to_array` function, or get the number of items with
     :phpfunction:`iterator_count`.
 
 .. caution::