Update interface.c

interface.c

@@ -878,7 +878,7 @@ void interpreter (char *line UU) {
       "chat_info <chat> - prints info about chat\n"
       "user_info <user> - prints info about user\n"
       "fwd <user> <msg-seqno> - forward message to user. You can see message numbers starting client with -N\n"
-      "rename_chat <char> <new-name>\n"
+      "rename_chat <chat> <new-name>\n"
       "load_photo/load_video/load_video_thumb <msg-seqno> - loads photo/video to download dir. You can see message numbers starting client with -N\n"
       "view_photo/view_video/view_video_thumb <msg-seqno> - loads photo/video to download dir and starts system default viewer. You can see message numbers starting client with -N\n"
       "show_license - prints contents of GPLv2\n"