Replace old how-to video of adding datasets to Data.gov

The skills development section of resources.data.gov https://resources.data.gov/categories/skills-development/

links to an old video from 2014

https://www.youtube.com/watch?v=hbxA5-GDvvU

We should record a new instructional video, work with digitalgov to post on their YouTube channel, and then substitute a new link.