Fix some bad documentation links.

sdk/lib/core/iterable.dart

Index: sdk/lib/core/iterable.dart
diff --git a/sdk/lib/core/iterable.dart b/sdk/lib/core/iterable.dart
index 18ec4d131828f50de12f5ccd7b428534d0e5aa73..397d9192d24947ec551e3c9343412ec7db97a500 100644
--- a/sdk/lib/core/iterable.dart
+++ b/sdk/lib/core/iterable.dart
@@ -75,7 +75,7 @@ part of dart.core;
  *
  * Since an iterable may be iterated more than once, it's not recommended to
  * have detectable side-effects in the iterator.
- * For methods like [map] and [while], the returned iterable will execute the
+ * For methods like [map] and [where], the returned iterable will execute the
  * argument function on every iteration, so those functions should also not
  * have side effects.
  */
@@ -207,7 +207,7 @@ abstract class Iterable<E> {
    *
    * Some types of iterable may have a different equality used for its elements.
    * For example, a [Set] may have a custom equality
-   * (see [Set.identical]) that its `contains` uses.
+   * (see [Set.identity]) that its `contains` uses.
    * Likewise the `Iterable` returned by a [Map.keys] call
    * should use the same equality that the `Map` uses for keys.
    */