DND string change.

Change-Id: I2a83ee3018f539602726670f7e8614d6f13cfc90
Fixes: 33282732
Test: manual
diff --git a/core/res/res/values/strings.xml b/core/res/res/values/strings.xml
index 87f38c1..6c08473 100644
--- a/core/res/res/values/strings.xml
+++ b/core/res/res/values/strings.xml
@@ -4277,7 +4277,7 @@
     <string name="zen_mode_alarm">Until <xliff:g id="formattedTime" example="10:00 PM">%1$s</xliff:g> (next alarm)</string>
 
     <!-- Zen mode condition: no exit criteria. [CHAR LIMIT=NONE] -->
-    <string name="zen_mode_forever">Until you turn this off</string>
+    <string name="zen_mode_forever">Until you turn off Do Not Disturb</string>
 
     <!-- Zen mode condition: no exit criteria, includes the name of the feature for emphasis. [CHAR LIMIT=NONE] -->
     <string name="zen_mode_forever_dnd">Until you turn off Do Not Disturb</string>