update reposit detail

app/views/repositories/detail.json.jbuilder

@@ -19,6 +19,7 @@ json.version_releasesed_count @project.releases_size(@user.try(:id), "released")
 json.permission render_permission(@user, @project)
 json.mirror_url @project&.repository.remote_mirror_url
 json.mirror @project&.repository.mirror_url.present?
+json.web_site @project.page.try(:identifier)
 json.type @project.numerical_for_project_type
 json.open_devops @project.open_devops?
 json.topics @project.project_topics.each do |topic|