Unordered list design guidelines image is potentially confusing

[wise-king-sullyman]

The first image under https://www.patternfly.org/components/list/design-guidelines#ordered seems to be a potential cause for confusion, as the Wizard can cause a misinterpretation that we offer an unordered list with the wizard step styling, as happened in this Slack thread.

I think we should replace that image with one of an unordered list outside of a Wizard.

[dlabaj]

We should also make this update in v5.

[edonehoo]

Closed by #4544