docs-bug(list): active-indicator-shape is not a color

[Pedro-31072]

Documentation Feedback

In the Angular Material documentation, active-indicator-shape appears as a color in both the table and the usage example.

Affected documentation page

https://material.angular.dev/components/list/styling

[crisbeto]

This is because the logic we use to pick out the example is a bit naive. It just takes the first two tokens and puts them in the example.