fix get_template bug

app.py

@@ -54,17 +54,17 @@ def get_all_templates() -> List[str]:
     :return: List of template names
     """
     settings_path = Path("metagpt/ext/spo/settings")
-
+    
     # Get default templates
     templates = [f.stem for f in settings_path.glob("*.yaml")]
-
+    
     # Get user-specific templates if user_id exists
     if "user_id" in st.session_state:
         user_path = settings_path / st.session_state.user_id
         if user_path.exists():
-            user_templates = [f.stem for f in user_path.glob("*.yaml")]
-            templates.extend(f"{st.session_state.user_id}/{user_templates}")
-
+            user_templates = [f"{st.session_state.user_id}/{f.stem}" for f in user_path.glob("*.yaml")]
+            templates.extend(user_templates)
+    
     return sorted(list(set(templates)))