I'm not 100% sure that a videos section in the documentation is a good idea. First of all it is my understanding that the documentation is supposed to help users/developers use/develop stuff. Videos by random users which only show what they have implemented don't help with that. Tutorial videos on the other hand can be very useful.
Secondly it will be quite difficult to maintain that videos section because the regular user doesn't have the rights to alter the contents of the documentation. So to add a new video the user would have to create a Pull Request which someone else then has to approve. --> Complicated workflow for such a simple thing.
All in all I think that videos showcasing user projects should rather be published here in the forum where it is very easy for users to post such videos than in the documentation.
It's worth discussing