message: Add note about !cmd being case-sensitive.
diff: @@ -231,7 +231,8 @@ MatrixHandler.prototype._onAdminMessage = Promise.coroutine(function*(req, event
  },
  "!cmd": {
  example: `!cmd [irc.example.net] COMMAND [arg0 [arg1 [...]]]`,
  - summary: `Issue a raw IRC command. These will not produce a reply.`,
  + summary: "Issue a raw IRC command. These will not produce a reply." +
  + "(Note that the command must be all uppercase.)",
  },
  };
  