fixed TOC links, shortened TOC, localhost edits
fixed TOC links, shortened TOC, localhost edits

Also improved headers for consistency

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