haproxy: missing ssl keyword

Stateless-Mode.md

@@ -84,7 +84,7 @@ Configure your webserver to respond statelessly to challenges for a given accoun
         option httplog
         mode  http
         bind :80
-        bind :443 crt /etc/haproxy/certs/
+        bind :443 ssl crt /etc/haproxy/certs/
         http-request return status 200 content-type text/plain lf-string "%[path,field(-1,/)].${ACCOUNT_THUMBPRINT}\n" if { path_beg '/.well-known/acme-challenge/' }
     ```
 3. Ok, you can issue cert now.