Fix typo and add clarification for Iterator::push-all

Author: niner

lib/Type/Iterator.pod

@@ -65,7 +65,7 @@ produce more elements to achieve better performance.
 
 Produces all elements from the iterator and pushes them to C<$target>.
 
-The fallback is implemented in terms of C<push-at-least> with a larget
+The fallback is implemented in terms of repeated C<push-at-least> with a large
 C<$count>.
 
 =head2 method push-until-lazy