Add missing comma in sitemap example (#3520)
Add missing comma in sitemap example (#3520)


fabrictech/gatsby,gatsbyjs/gatsby,gatsbyjs/gatsby,0x80/gatsby,danielfarrell/gatsby,ChristopherBiscardi/gatsby,mingaldrichgan/gatsby,mingaldrichgan/gatsby,gatsbyjs/gatsby,gatsbyjs/gatsby,0x80/gatsby,ChristopherBiscardi/gatsby,mingaldrichgan/gatsby,ChristopherBiscardi/gatsby,gatsbyjs/gatsby,0x80/gatsby,fabrictech/gatsby,gatsbyjs/gatsby,fk/gatsby,fk/gatsby,fabrictech/gatsby,danielfarrell/gatsby,fk/gatsby,ChristopherBiscardi/gatsby,danielfarrell/gatsby