change revoke text (#1684)

src/locales/en/messages.json

@@ -4669,7 +4669,7 @@
     "message": "Email Sent"
   },
   "revokeSponsorshipConfirmation": {
-    "message": "After removing this account, the Families organization owner will be responsible for this subscription and related invoices. Are you sure you want to continue?"
+    "message": "After removing this account, the Families plan sponsorship will expire at the end of the billing period. You will not be able to redeem a new sponsorship offer until the existing one expires. Are you sure you want to continue?"
   },
   "removeSponsorshipSuccess": {
     "message": "Sponsorship Removed"