Fix:Redis configuration template error in v0.22.1 (#12685)

### What problem does this PR solve?
https://github.com/infiniflow/ragflow/issues/12674

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

conf/service_conf.yaml

@@ -43,7 +43,8 @@ redis:
   db: 1
   username: ''
   password: 'infini_rag_flow'
-  host: 'localhost:6379'
+  host: 'localhost'
+  port: 6379
 task_executor:
   message_queue_type: 'redis'
 user_default_llm: