[OUDS] Update buttons with documentation on multiline

[MaxLardenois]

Prerequisites

• I have searched for duplicate or closed feature requests
• I have read the contributing guidelines

Proposal

We must check that our documentation and implementation correspond to the "Multiline and responsiveness" paragraphs of the buttons in Figma.
We should have examples of multiline buttons at least

Motivation and context

Be in line with Figma spec