Update main.py

main.py

@@ -97,7 +97,7 @@ def handle_image_message(event):
         image_binary = image_generator.generate_image_with_gemini(prompt)
 
         if image_binary:
-            image_url = 'https://alanchen1115-linebot.hf.space/'+image_generator.upload_image_to_tmp(image_binary) ### 要改 https
+            image_url = os.getenv("HF_SPACE")+image_generator.upload_image_to_tmp(image_binary) ### 要改 https
 
             if image_url:
                 # 使用 push message 發送圖片，避免 reply token 超時