Fix malformed XML.

Change-Id: Id7dfdf96952ef2f9d41359c163e8d64e303f75cc
diff --git a/res/values/dimens.xml b/res/values/dimens.xml
index df93199..722fb0d 100644
--- a/res/values/dimens.xml
+++ b/res/values/dimens.xml
@@ -44,7 +44,7 @@
     <dimen name="toolbar_external_icon_height">36dp</dimen>
 
 <!-- AllApps/Customize/AppsCustomize -->
-    <!-- The height of the tab bar -- if this changes, we should update the
+    <!-- The height of the tab bar - if this changes, we should update the
          external icon width/height above to compensate -->
     <dimen name="apps_customize_tab_bar_height">56dp</dimen>
     <dimen name="app_icon_size">48dp</dimen>