feat(pie-docs): DSW-2616 add the code section of the thumbnail component

[raoufswe]

Describe your changes (can list changeset entries if preferable)

Author Checklist (complete before requesting a review)

• I have performed a self-review of my code
• I have added thorough tests where applicable (unit / component / visual)
• I have reviewed the Docs site preview
• If there are visual test updates, I have reviewed them properly before approving

Reviewer checklists (complete before approving)

Reviewer 1 – @ashleynolan

• I have reviewed the Docs site preview
• If new links have been added, I have tested them in the preview
• If there are visual test updates, I have reviewed them

Reviewer 2

• I have reviewed the Docs site preview
• If new links have been added, I have tested them in the preview
• If there are visual test updates, I have reviewed them

[changeset-bot]

🦋 Changeset detected

Latest commit: 4321a7f

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
pie-docs	Minor

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[pie-design-system-bot]

	Fails
🚫	You have unchecked checklist items outside the "Not-applicable Checklist items" section. Please ensure all unchecked checkboxes are moved to the appropriate section.
🚫	You have unchecked checklist items in Reviewer 2's section. Please ensure all items are addressed before approval.

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