Chapter 15 pag. 505: Typo

[miticollo]

I think there is a typo in the following computation

\mathbf{o}^{\left( t \right)} = \sigma_{0}\left( \mathbf{W}_{ho}\mathbf{h}^{\left( t \right)}+\mathbf{b}_{0} \right)

I mean $0$ as subscript should be replaced with $o$:

\mathbf{o}^{\left( t \right)} = \sigma_{o}\left( \mathbf{W}_{ho}\mathbf{h}^{\left( t \right)}+\mathbf{b}_{o} \right)

Anyway Figure 15.6 is correct.