Typo in WhoDidIt referring to "udpated_by" instead of "updated_by"

[NaLogo]

Hey,

there is a typo in WhoDidIt, it refers to the field "udpated_by" instead of "updated_by". Line 43

public function updating(Eloquent $model){ $model->udpated_by = $this->doer(); }

[NaLogo]

Opened a PR

https://github.com/reliese/laravel/pull/242

[finiteinfinity]

Fixed in #242