Documentation links and a status fix

Added a link to product documentation: https://www.aiscreen.io/guides/

Added a link to product documentation: https://brixsignage.com/guides/

Added a link to product documentation: https://support.dynasign.net/hc/en-us

Added a link to product documentation: https://menumagik.ai/kb

Added a link to product documentation: https://help.niio.com/en/

Added a link to product documentation: https://screenbird.app/en/help

Added a link to product documentation: https://support.getseed.io/

Added a link to product documentation: https://signosds.com/#downloads

Added a link to product documentation: https://help.taplist.io/

Added a link to product documentation: https://support.tecastic.com/portal/en/home

Added a link to product documentation: https://help.untappd.com/hc/en-us/categories/360001962551-Untappd-for-Business

Added a link to product documentation: https://help.viewmedica.com/

Marked as active; the product is no longer listed as discontinued.