pkg/isolate: spelling fixes

example/runner_pool.dart

 // Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library isolate.example.runner_pool;
 
 import 'dart:async' show Future, Completer;
 
 import 'package:isolate/load_balancer.dart';
 import 'package:isolate/isolate_runner.dart';
@@ skipping 10 matching lines @@
     sw.start();
     // Then compute fib up to 42 with 2 isolates.
     parfib(N, 2).then((v2) {
       var t2 = sw.elapsedMilliseconds;
       sw.stop();
       print("fib#2(${N}) = ${v2[N]}, ms: $t2");
     });
   });
 }
 
-// Compute fibonnacci 1..limit
+// Compute fibonacci 1..limit
 Future<List<int>> parfib(int limit, int parallelity) {
   return LoadBalancer.create(parallelity, IsolateRunner.spawn).then(
     (LoadBalancer pool) {
       List<Future> fibs = new List(limit + 1);
       // Schedule all calls with exact load value and the heaviest task
       // assigned first.
       schedule(a, b, i) {
         if (i < limit) {
           schedule(a + b, a, i + 1);
         }
         fibs[i] = pool.run(fib, i, load: a);
       }
       schedule(0, 1, 0);
       // And wait for them all to complete.
       return Future.wait(fibs).whenComplete(pool.close);
     });
 }
 
 int computeFib(n) {
   int result = fib(n);
   return result;
 }
 
 int fib(n) {
   if (n < 2) return n;
   return fib(n - 1) + fib(n - 2);
 }