This screenshot (https://matomo.org/docs/update/#3-update-matomo) should be replaced with a somewhat newer image. Showing a screen for Piwik version 0.2.x seems really weird.

P.S. Maybe edit this screens to: https://matomo.org/docs/update/#click-on-the-alert-box-in-matomo
https://matomo.org/docs/update/#read-the-message-and-click-update-automatically
https://matomo.org/docs/update/#watch-the-magic