Adding real url for voicemail donation promo learn-more link

Bug: 73780549
Test: manual
PiperOrigin-RevId: 186669251
Change-Id: I2b45caa7b0a0a20e2466f51b7d659ce61a4945cf
diff --git a/java/com/android/dialer/app/res/values/strings.xml b/java/com/android/dialer/app/res/values/strings.xml
index 34ec611..5773a0c 100644
--- a/java/com/android/dialer/app/res/values/strings.xml
+++ b/java/com/android/dialer/app/res/values/strings.xml
@@ -693,8 +693,7 @@
   <!-- Text for a 'learn more' link at the end of the voicemail donation promo dialog content -->
   <string name="voicemail_donation_promo_learn_more">Learn&#160;more</string>
 
-  <!-- TODO(mdooley): get real url -->
-  <string translatable="false" name="voicemail_donation_promo_learn_more_url">https:www.google.com</string>
+  <string translatable="false" name="voicemail_donation_promo_learn_more_url">https://support.google.com/phoneapp/answer/2811844?hl=en%26ref_topic=7539039</string>
 
   <!-- Label for the voicemail donation promo dialog opt-in button
        [CHAR LIMIT=20] -->