Fix the order of sample categories left nav.

Bug: 18323953
Change-Id: Iea882fed74428d092c02e3cfcf2171c4c596b8a8
diff --git a/Android.mk b/Android.mk
index 9480487..75e32c1 100644
--- a/Android.mk
+++ b/Android.mk
@@ -732,14 +732,14 @@
                  -samplegroup Content \
                  -samplegroup Input \
                  -samplegroup Media \
+                 -samplegroup Notification \
                  -samplegroup RenderScript \
                  -samplegroup Security \
                  -samplegroup Sensors \
                  -samplegroup Testing \
                  -samplegroup UI \
                  -samplegroup Views \
-                 -samplegroup Wearable \
-                 -samplegroup Notification
+                 -samplegroup Wearable
 
 ## SDK version identifiers used in the published docs
   # major[.minor] version for current SDK. (full releases only)