Update lists.md
Update lists.md

Adding embed code for Managing Multiple Lists and Segment videos into doc.
hardikjain29/docs,Aonepathan/docs,Whatthefoxsays/docs,katieporter/docs,hardikjain29/docs,sendgrid/docs,katieporter/docs,ksigler7/docs,katieporter/docs,ksigler7/docs,Whatthefoxsays/docs,hardikjain29/docs,Aonepathan/docs,katieporter/docs,ksigler7/docs,Aonepathan/docs,sendgrid/docs,katieporter/docs,Aonepathan/docs,Whatthefoxsays/docs,hardikjain29/docs,Aonepathan/docs,sendgrid/docs,hardikjain29/docs