Description of the TB nomination process in the Ubuntu documentation

[Sebastien Bacher]

Hey there,

I was reading the TB summary on 
https://ubuntu.com/community/governance/technical-board and it states

```
Nominations for the Technical Board will be considered for each release 
(every six months). Mark Shuttleworth, as project sponsor, is 
responsible for nominating candidates, and a poll of Ubuntu developers 
will be conducted to select, or veto, the final membership. Appointments 
are made for a period of two years.

     Ubuntu developers include all developers who have upload rights to 
the Ubuntu archives, including both main and universe, or specific 
packages, or sets of packages.
```

Which doesn't seems to match what has been happening in recent years 
where we had the CC issuing a call for nominations, Mark reviewing the 
list and then a vote.

I'm sending the email as a FYI and as something to discuss in one of the 
next board meetings

Cheers,
Sébastien Bacher