Programming Phoenix LiveView B9: redirect_if_user_is_authenticated missing : on page 59

When explaining the different atoms that can be passed to the on_mount callback the first two options have the : present, but :redirect_if_user_is_authenticated is missing the :.

With the different versions of the on_mount function
provided by the auth generator, we can execute code that adds the user to
the socket with :mount_current_user, makes sure the user is authenticated
with :ensure_authenticated, or perform a redirect using redirect_if_user_is_authenticated.

Thank you! Will fix :slight_smile: