Fix issues caught by Android Lint

Fixes:
external/androidplot/Examples/DemoApp/res/values/style.xml:17: Warning: Unexpected namespace URI bound to the "android" prefix, was http://schemas.android.com/apk/lib/com.androidplot.xy, expected http://schemas.android.com/apk/res/android [NamespaceTypo]

Test: rerun lint
Change-Id: I74b535b92c4aa81b4d60ec7504ebd1cce51234a7
diff --git a/Examples/DemoApp/res/values/style.xml b/Examples/DemoApp/res/values/style.xml
index 188f3a0..4c35081 100644
--- a/Examples/DemoApp/res/values/style.xml
+++ b/Examples/DemoApp/res/values/style.xml
@@ -14,7 +14,7 @@
   ~    limitations under the License.

   -->

 

-<resources xmlns:android="http://schemas.android.com/apk/lib/com.androidplot.xy">

+<resources xmlns:android="http://schemas.android.com/apk/res/android">

     <style name="sample_activity">

         <item name="android:layout_width">fill_parent</item>

         <item name="android:layout_height">fill_parent</item>