Because erp5-cluster was merged to master it's safe to use master now.

playbook/wendelin-standalone.yml

@@ -3,10 +3,10 @@
   connection: local
 
   vars:
-    software_release_url: https://lab.nexedi.cn/nexedi/slapos/raw/erp5-cluster-0.1.1/software/wendelin/software.cfg
+    software_release_url: https://lab.nexedi.cn/nexedi/slapos/raw/1.0.8.1/software/wendelin/software.cfg
     startup_playbook_id: wendelin-standalone.yml
     playbook_name: wendelin
     request_instance_template: request-wendelin.j2
 
   roles:
-    - standalone-shared
+    - standalone-shared
\ No newline at end of file