[Settings] Backup calling string change

Change on wordings based on suggestion.

Bug: 178117374
Change-Id: I834ae66a112a3ed4074282db84107ee5a386ccf8
Test: on device
diff --git a/res/values/strings.xml b/res/values/strings.xml
index 75b2645..82baa3b 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -12323,7 +12323,7 @@
     <string name="backup_calling_settings_title">Backup calling</string>
 
     <!-- Backup calling summary.  [CHAR LIMIT=100] -->
-    <string name="backup_calling_setting_summary">If <xliff:g id="backup_calling_operator_text" example="Google Fi">%1$s</xliff:g> is unavailable, use your mobile data SIM to make and receive <xliff:g id="backup_calling_carrier_text" example="Google Fi">%1$s</xliff:g> calls.</string>
+    <string name="backup_calling_setting_summary">If <xliff:g id="backup_calling_operator_text" example="Google Fi">%1$s</xliff:g> is unavailable or roaming, use your mobile data SIM for <xliff:g id="backup_calling_carrier_text" example="Google Fi">%1$s</xliff:g> calls.</string>
 
     <!-- List of synonyms for the cross SIM calling titles, used to match in settings search [CHAR LIMIT=NONE] -->
     <string name="keywords_backup_calling">backup calling</string>