There are some incorrect description in the response of the 'tiup dm --version' command

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. What did you do?
   [root@localhost ~]# tiup dm --version
   Starting component dm: /root/.tiup/components/dm/v1.1.2/tiup-dm --version
   tiup version v1.1.2 tiup
   Go Version: go1.13
   Git Branch: release-1.1
   GitHash: 7cb85b9-dirty
   [root@localhost ~]#
   [root@localhost ~]# tiup --version
   v1.0.9 tiup
   Go Version: go1.13
   Git Branch: master
   GitHash: 41fbacf

2. What did you expect to see?
   there is a 'tiup version' in 'tiup dm --version' response too, but I think, it should be dm version here.
   because I got a different tiup version by 'tiup --version' command

3. What did you see instead?

both 'tiup dm --version' and 'tiup --version' response a tiup version, but their values are different.

4. What version of TiUP are you using (tiup --version)?
   [root@localhost ~]# tiup --version
   v1.0.9 tiup
   Go Version: go1.13
   Git Branch: master
   GitHash: 41fbacf
   [root@localhost ~]# tiup dm --version
   Starting component dm: /root/.tiup/components/dm/v1.1.2/tiup-dm --version
   tiup version v1.1.2 tiup
   Go Version: go1.13
   Git Branch: release-1.1
   GitHash: 7cb85b9-dirty
   [root@localhost ~]#

Start with the tiup dm --version and tiup --version command entry points, comparing how each assembles its version response. Done means tiup dm --version reports the DM version rather than an inconsistent TiUP version, with relevant command tests covering the output.