fix https://github.com/acmesh-official/acme.sh/issues/2888

dnsapi/dns_cf.sh

@@ -59,7 +59,7 @@ dns_cf_add() {
   _debug "Getting txt records"
   _cf_rest GET "zones/${_domain_id}/dns_records?type=TXT&name=$fulldomain"
 
-  if ! printf "%s" "$response" | grep \"success\":true >/dev/null; then
+  if ! echo "$response" | tr -d " " | grep \"success\":true >/dev/null; then
     _err "Error"
     return 1
   fi