Fix typo in Sample Browser AndroidManifest.xml

samples/browser/android/AndroidManifest.xml

@@ -13,7 +13,7 @@
                   android:label="@string/app_name"
                   android:configChanges="orientation|keyboardHidden"
 				  android:theme="@android:style/Theme.NoTitleBar.Fullscreen"
-				  sandroid:screenOrientation="landscape">
+				  android:screenOrientation="landscape">
             <meta-data android:name="android.app.lib_name" android:value="sample-browser" />
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />