update introduction of chat_with_ai (#483)

Author: gubaiovo

plugins/chat_with_ai/introduction-zh_cn.md

@@ -9,5 +9,9 @@
     "repository": "https://github.com/gubaiovo/MCDR_chat_with_ai",
     "branch": "main",
     "related_path": "chat_with_ai",
-    "labels": ["tool"]
+    "labels": ["tool"],
+    "introduction": {
+        "en_us": "doc/README.md",
+        "zh_cn": "doc/README_CN.md"
+    }
 }