Fix "multiple substitutions specified in non-positional format" lint.

res/values/strings.xml

@@ -1467,7 +1467,7 @@
     <string name="ProgressPreference_d_messages_so_far">%d messages so far</string>
     <string name="RegistrationActivity_please_enter_the_verification_code_sent_to_s">Please enter the verification code sent to %s.</string>
     <string name="RegistrationActivity_wrong_number">Wrong number</string>
-    <string name="RegistrationActivity_call_me_instead_available_in">Call me instead \n (Available in %02d:%02d)</string>
+    <string name="RegistrationActivity_call_me_instead_available_in">Call me instead \n (Available in %1$02d:%2$02d)</string>
     <string name="BackupUtil_never">Never</string>
     <string name="BackupUtil_unknown">Unknown</string>
     <string name="preferences_app_protection__screen_lock">Screen lock</string>