[IMP] website_slides: update demo url and revert e522a11
[IMP] website_slides: update demo url and revert e522a11

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