Fix /rates command

chatikbot.lisp

@@ -208,7 +208,7 @@
 
 (defun handle-cmd-rates (chat-id message-id args)
   (log:info "handle-cmd-rates" chat-id message-id args)
-  (let (rates (get-rates))
+  (let ((rates (get-rates)))
     (telegram-send-message chat-id
 			   (format nil "Зеленый ~A, гейро ~A" (cdar rates) (cdadr rates)))))