Improve wording of `Isolate.resume` documentation.

sdk/lib/isolate/isolate.dart

Index: sdk/lib/isolate/isolate.dart
diff --git a/sdk/lib/isolate/isolate.dart b/sdk/lib/isolate/isolate.dart
index f97fbcabc25254d6e5d9eeea3c69cdd8509066a4..8627be5b9a18c8bfc933a58e607ac8a86f6967b2 100644
--- a/sdk/lib/isolate/isolate.dart
+++ b/sdk/lib/isolate/isolate.dart
@@ -94,7 +94,7 @@ class Isolate {
    * then calls to [pause] will have no effect.
    *
    * If the isolate is spawned in a paused state, use this capability as
-   * argument to [resume] to resume the isolate.
+   * argument to the [resume] method in order to resume the paused isolate.
    */
   final Capability pauseCapability;