modules/autoop.cpp & autovoice.cpp: use "people" instead of "folks".

```
2014-06-27 08:32:04+0300 < KindOne> I would of gone with 'people'
instead of 'folks'
2014-06-27 08:33:08+0300 < Mikaela> I thought about it, but I then
thought that it would be shoot down, because people think that it's too
formal, but I will change that now.
```