Update iterators.md

Harish Hurchurn · Harish Hurchurn · commit 273dba2a71aa · 2014-08-02T19:56:06.000+01:00
Does this addition help to clarify this line at all?
diff --git a/overviews/collections/iterators.md b/overviews/collections/iterators.md
@@ -26,7 +26,7 @@ As always, for-expressions can be used as an alternate syntax for expressions in
 
 There's an important difference between the foreach method on iterators and the same method on traversable collections: When called on an iterator, `foreach` will leave the iterator at its end when it is done. So calling `next` again on the same iterator will fail with a `NoSuchElementException`. By contrast, when called on on a collection, `foreach` leaves the number of elements in the collection unchanged (unless the passed function adds to removes elements, but this is discouraged, because it may lead to surprising results).
 
-The other operations that Iterator has in common with `Traversable` have the same property. For instance, iterators provide a `map` method, which returns a new iterator:
+The other operations that Iterator has in common with `Traversable` is that they have the same property. For instance, iterators provide a `map` method, which returns a new iterator:
 
     scala> val it = Iterator("a", "number", "of", "words")
     it: Iterator[java.lang.String] = non-empty iterator
