Incorrect description in document

[christaikobo]

https://www.libtorrent.org/reference-Settings.html#peer_dscp

When using qbittorrent 5.1.4 with libtorrent 2.0.11.0, the setting in advanced section is setting all 8 bits of the ToS, including 6 bits of DSCP and 2 bits of ECN.

So the document of libtorrent is inaccurate, it is not setting the DSCP value.

To be more specific, if I want outgoing packets to have DSCP value 63, I need to set the setting to 252 or 0x3c.

So either the document needs to change, or the implementation needs to change.