Update comment for "log_screen_metrics"

Change-Id: Ic558246814a09fa53c99c4b96ecd5c0f77ca5e93
diff --git a/java/res/values-sw768dp/config.xml b/java/res/values-sw768dp/config.xml
index a438fe9..c25139a 100644
--- a/java/res/values-sw768dp/config.xml
+++ b/java/res/values-sw768dp/config.xml
@@ -38,6 +38,12 @@
     <string name="config_default_keyboard_theme_id" translatable="false">5</string>
     <string name="config_text_size_of_language_on_spacebar" translatable="false">medium</string>
     <integer name="config_max_more_keys_column">5</integer>
-    <!--  Screen metrics for logging. 0 = "mdpi", 1 = "hdpi", 2 = "xlarge" -->
+    <!--  Screen metrics for logging.
+            0 = "mdpi phone screen"
+            1 = "hdpi phone screen"
+            2 = "mdpi 11 inch tablet screen"
+            3 = "xhdpi phone screen?"
+            4 = ?
+    -->
     <integer name="log_screen_metrics">2</integer>
 </resources>