Fix a typo in embedder.dart

sky/framework/embedder.dart

Index: sky/framework/embedder.dart
diff --git a/sky/framework/embedder.dart b/sky/framework/embedder.dart
index 9f7bafd86b85d69c743d7bd6c733b5e13e336e32..facb7cd85c3c3a11f81a34f1fb58a8f08a234aca 100644
--- a/sky/framework/embedder.dart
+++ b/sky/framework/embedder.dart
@@ -25,7 +25,7 @@ class _EmbedderImpl {
           new core.MojoHandle(internals.takeServicesProvidedToEmbedder());
       var proxyHandle =
           new core.MojoHandle(internals.takeServicesProvidedByEmbedder());
-      _connection = new ApplicationConection(
+      _connection = new ApplicationConnection(
           stubHandle.isValid ? new ServiceProviderStub.fromHandle(stubHandle) : null,
           proxyHandle.isValid ? new ServiceProviderProxy.fromHandle(proxyHandle) : null);
     }