website: update platforms to note instance-store AMI [GH-230]
website: update platforms to note instance-store AMI [GH-230]

patricklucas/packer,suma/packer,patricklucas/packer,Kaixiang/packer,TranscendComputing/packer,TranscendComputing/packer,Kaixiang/packer,suma/packer,Kaixiang/packer,suma/packer,Kaixiang/packer,TranscendComputing/packer,patricklucas/packer,TranscendComputing/packer,patricklucas/packer,suma/packer