show response when unable to retrieve DNS records for a zone

dnsapi/dns_cf.sh

@@ -111,7 +111,7 @@ dns_cf_rm() {
   _cf_rest GET "zones/${_domain_id}/dns_records?type=TXT&name=$fulldomain&content=$txtvalue"
 
   if ! printf "%s" "$response" | grep \"success\":true >/dev/null; then
-    _err "Error"
+    _err "Error: $response"
     return 1
   fi