Change title for auto-renew section

docs/membership/manual-entry-of-memberships.md

@@ -142,7 +142,7 @@ the contact that their membership is confirmed
         message to the member. If you don't enter text, the default
         confirmation and receipt message will be used.
 
-### Auto-renew Memberships via Back end
+### Auto-renew Memberships via a contact record
 
 To manually create a membership that will auto-renew go to the contact's
 summary screen, select the **Memberships** tab and click on **Submit