Update network-exchange-faqs.md
Update network-exchange-faqs.md

Under Q: Can anyone use Network Exchange?, removed A: " or their COLO environment in the same data center."
daveshac/PublicKB,StephanieWong/PublicKB,anthonyvetter/PublicKB,jtowns3/PublicKB,robcaldwell/PublicKB,robertlesieur/PublicKB,mfar78/PublicKB,jwcolbert/PublicKB,DLM1/PublicKB,jwebs1/PublicKB,ack/PublicKB