Fix: a11y media element examples:named-exports

[izumiiii]

Fix: examples page: named-exports a11y

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Tests

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[Conduitry]

Thanks - could you also make the same change in the 'Sharing code' and 'Exports' tutorials as well please?

[izumiiii]

@Conduitry
Done!

[stale]

This pull request has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[tanhauhau]

Thanks for the change. I'm going to close this, since the a11y warning is removed now, check on the PR #6054 to learn why the a11y checking is removed.