fix variable name typo

app.py

@@ -5,10 +5,10 @@ from modelscope.outputs import OutputKeys
 
 pipe = pipeline(task='image-to-video', model='damo/Image-to-Video', model_revision='v1.1.0')
 
-def infer (audio_in):
+def infer (image_in):
     
     # IMG_PATH: your image path (url or local file)
-    IMG_PATH = audio_in
+    IMG_PATH = image_in
     output_video_path = pipe(IMG_PATH, output_video='output.mp4')[OutputKeys.OUTPUT_VIDEO]
     print(output_video_path)
     
@@ -87,7 +87,7 @@ with gr.Blocks(css=css) as demo:
     submit_btn.click(
         fn = infer,
         inputs = [
-            audio_in
+            image_in
         ],
         outputs = [
             video_out