Settings: Increase no&sounds char limit to 30

Bug: 17196576
Change-Id: I9baffcf19258e1d106b69a8738dbd387ec61def7
diff --git a/res/values/strings.xml b/res/values/strings.xml
index 2058749..97d99e7 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -5619,7 +5619,7 @@
 
     <!-- Sounds and Notification -->
 
-    <!-- Sound & notification: Settings header. [CHAR LIMIT=20] -->
+    <!-- Sound & notification: Settings header. [CHAR LIMIT=30] -->
     <string name="notification_settings">Sound &amp; notification</string>
 
     <!-- Sound & notification > Sound section: Title for the option managing media volume. [CHAR LIMIT=30] -->