Update string to include dash

Bug: 26742642
Test: n/a
PiperOrigin-RevId: 182144609
Change-Id: I4d4364892775c18224f37981d5e3f128dee086cc
diff --git a/java/com/android/dialer/dialpadview/res/values/strings.xml b/java/com/android/dialer/dialpadview/res/values/strings.xml
index 4815416..094ca6b 100644
--- a/java/com/android/dialer/dialpadview/res/values/strings.xml
+++ b/java/com/android/dialer/dialpadview/res/values/strings.xml
@@ -59,7 +59,7 @@
   <!-- Item label: jump to the in-call DTMF dialpad.
          (Part of a list of options shown in the dialer when another call
          is already in progress.) -->
-  <string name="dialer_useDtmfDialpad">Use touch tone keypad</string>
+  <string name="dialer_useDtmfDialpad">Use touch-tone keypad</string>
 
   <!-- Item label: jump to the in-call UI.
        (Part of a list of options shown in the dialer when another call