fixed 删除用户时issue，pr，评论用户显示已注销

app/views/version_releases/_version_release.json.jbuilder

@@ -11,9 +11,9 @@ json.zipball_url render_zip_url(@owner, @repository, version&.tag_name)
 json.draft version&.draft ? "草稿" : (version&.prerelease ? "预发行" : "稳定")
 json.created_at format_time(version.created_at.to_s.to_time)
 json.published_at format_time(version.created_at.to_s.to_time)
-json.user_name user.present? ? user.try(:show_real_name) : ""
+json.user_name user.present? ? user.try(:show_real_name) : "已注销"
 json.user_login user&.login
-json.image_url user.present? ? url_to_avatar(user) : ""
+json.image_url user.present? ? url_to_avatar(user) : "images/account/del.svg"
 json.attachments do
   json.array! version.try(:attachments) do |attachment|
     # json.partial! "attachments/attachment_simple", locals: {attachment: attachment}