Updated front matter and links of two examples

[alessioventuriniAND]

What is the context of this PR?

This fixes: #3182

I have removed the layout: example from the front matter of one example as it didn't really add anything to the example layout itself.

I have also updated the layout: noneto layout: ~. This has also fixed an issue with one example that was not displaying correctly.

Lastly I have update two links within the same component as they were pointing to an old path.

How to review this PR

Pull this branch and confirm that the changed examples are working as expected.

Checklist

This needs to be completed by the person raising the PR.

• [x] I have selected the correct Assignee
• [x] I have linked the correct Issue

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