[FIX] website_slides: demo video is dead
[FIX] website_slides: demo video is dead

LasLabs/website,gfcapalbo/website,brain-tec/website,gfcapalbo/website,open-synergy/website,LasLabs/website,open-synergy/website,acsone/website,open-synergy/website,brain-tec/website,open-synergy/website,acsone/website,gfcapalbo/website,acsone/website,brain-tec/website,gfcapalbo/website,acsone/website,LasLabs/website,LasLabs/website,brain-tec/website