Update autoload/denops/_internal/echo.vim

Co-authored-by: Milly <milly.ca@gmail.com>

Author: lambdalisue

autoload/denops/_internal/echo.vim

@@ -56,5 +56,5 @@ function! s:echomsg_batch() abort
   let s:delayed_timer = 0
   let s:delayed_messages = []
   " Forcibly show the messages to the user
-  call feedkeys(printf(":\<C-u>%dmessages\<CR>", l:counter), 'nt')
+  call feedkeys(printf("\<Cmd>%dmessages\<CR>", l:counter), 'n')
 endfunction