Fix some sync adapter docs typos.

Change-Id: Icb108bcfd7835049ff7d50660d1f8084ebc3c8e9

Author: Andrew Flynn

docs/html/training/sync-adapters/creating-stub-provider.jd

@@ -190,7 +190,7 @@ public class StubProvider extends ContentProvider {
     <provider
         android:name="com.example.android.datasync.provider.StubProvider"
         android:authorities="com.example.android.datasync.provider"
-        android:export="false"
+        android:exported="false"
         android:syncable="true"/>
     ...
     </application>

docs/html/training/sync-adapters/creating-sync-adapter.jd

@@ -619,7 +619,7 @@ public class MainActivity extends FragmentActivity {
                 android:name="com.example.android.datasync.SyncService"
                 android:exported="true"
                 android:process=":sync">
-            <intent-filter>com.example.android.datasync.provider
+            <intent-filter>
                 <action android:name="android.content.SyncAdapter"/>
             </intent-filter>
             <meta-data android:name="android.content.SyncAdapter"