Add location of Gatsby icon to project templates

lib/gitlab/project_template.rb

@@ -51,7 +51,7 @@ module Gitlab
           ProjectTemplate.new('dotnetcore', '.NET Core', _('A .NET Core console application template, customizable for any .NET Core project'), 'https://gitlab.com/gitlab-org/project-templates/dotnetcore', 'illustrations/logos/dotnet.svg'),
           ProjectTemplate.new('android', 'Android', _('A ready-to-go template for use with Android apps'), 'https://gitlab.com/gitlab-org/project-templates/android', 'illustrations/logos/android.svg'),
           ProjectTemplate.new('gomicro', 'Go Micro', _('Go Micro is a framework for micro service development'), 'https://gitlab.com/gitlab-org/project-templates/go-micro', 'illustrations/logos/gomicro.svg'),
-          ProjectTemplate.new('gatsby', 'Pages/Gatsby', _('Everything you need to create a GitLab Pages site using Gatsby'), 'https://gitlab.com/pages/gatsby'),
+          ProjectTemplate.new('gatsby', 'Pages/Gatsby', _('Everything you need to create a GitLab Pages site using Gatsby'), 'https://gitlab.com/pages/gatsby', 'illustrations/third-party-logos/gatsby.svg'),
           ProjectTemplate.new('hugo', 'Pages/Hugo', _('Everything you need to create a GitLab Pages site using Hugo'), 'https://gitlab.com/pages/hugo', 'illustrations/logos/hugo.svg'),
           ProjectTemplate.new('jekyll', 'Pages/Jekyll', _('Everything you need to create a GitLab Pages site using Jekyll'), 'https://gitlab.com/pages/jekyll', 'illustrations/logos/jekyll.svg'),
           ProjectTemplate.new('plainhtml', 'Pages/Plain HTML', _('Everything you need to create a GitLab Pages site using plain HTML'), 'https://gitlab.com/pages/plain-html'),