fix gatsby showcase file (#12369)
fix gatsby showcase file (#12369)

Recently added my weblog to gatsby showcase, but have an extra title that didn't use
ChristopherBiscardi/gatsby,gatsbyjs/gatsby,gatsbyjs/gatsby,gatsbyjs/gatsby,ChristopherBiscardi/gatsby,ChristopherBiscardi/gatsby,ChristopherBiscardi/gatsby,gatsbyjs/gatsby,gatsbyjs/gatsby,gatsbyjs/gatsby