FIX gitea oauth grant url bug

app/controllers/concerns/ci/cloud_account_manageable.rb

@@ -94,7 +94,7 @@ module Ci::CloudAccountManageable
 
     # redirect_uri eg:
     #  https://localhost:3000/login/oauth/authorize?client_id=94976481-ad0e-4ed4-9247-7eef106007a2&redirect_uri=http%3A%2F%2F121.69.81.11%3A80%2Flogin&response_type=code&state=9cab990b9cfb1805
-    redirect_uri = CGI.escape("#{drone_url}/login&response_type=code&state=#{state}")
+    redirect_uri = CGI.escape("#{drone_url}/") + "login&response_type=code&state=#{state}"
     grant_url = "#{Gitea.gitea_config[:domain]}/login/oauth/authorize?client_id=#{client_id}&redirect_uri=#{redirect_uri}"
     logger.info "[gitea] grant_url: #{grant_url}"