Update .gitlab-ci.yml

-deploy_prod:
+deploy_stag:
   stage: deploy
   script:
   
@@ -6,9 +6,9 @@ deploy_prod:
   #- sh /var/www/chatbotplus.ai-pro.org/_server_config/deploy-org_chatbotplus-aipro.sh
   - sh /var/www/chatbotplus.ai-pro.org/_server_config/deploy-org_stag-chatbotplus-aipro.sh
   environment:
-    name: chatgpt-prod
-    url: https://chatgpt.ai-pro.org
+    name: chatgpt-stag
+    url: https://staging.chatbotplus.ai-pro.org
   only:
-  - master
+  - 01-aSTAG
   tags:
-  - chatgpt-prod
\ No newline at end of file
+  - chatgpt-stag
\ No newline at end of file