Programming Phoenix LiveView (B10): Typo in attribute specified when testing the rendering of canvas (page 370)

The test code on page 370 spec

<.canvas viewBox="0 0 200 30">

Based on the attr specs for PentoWeb.GameLive.Component.canvas/1 on page 369, the expected attribute is view_box, hence, it should be corrected as

<.canvas view_box="0 0 200 30">