Fix Youtube Playlist embed in Real-Time WG Page

Why is this change being made?

The embed should show the latest video from the WG Youtube Playlist but currently it's broken.

How will this merge request impact page speed?

No change.

Does this MR meet the acceptance criteria?

Assign to DRI

• Did you assign this change to the correct DRI of the page or information you are changing?

Conformity

• Added description to this MR explaining the reasons for the proposed change, per say-why-not-just-what