Don't translate "Chips Sample"

Change-Id: I9a6289522adab470866ff10777f7d2bd00e51999
diff --git a/sample/res/values/strings.xml b/sample/res/values/strings.xml
index c765231..a40b20d 100644
--- a/sample/res/values/strings.xml
+++ b/sample/res/values/strings.xml
@@ -15,7 +15,7 @@
 -->
 <resources>
 
-    <string name="app_name">Chips Sample</string>
+    <string name="app_name" translatable="false">Chips Sample</string>
     <string name="email_addresses">Email Addresses</string>
     <string name="phone_numbers">Phone Numbers</string>