Update app.py

app.py

@@ -35,7 +35,7 @@ for filename, url in model_files.items():
 
 # Translation class
 class translation:
-    def _init_(self, video_path, original_language, target_language):
+    def __init__(self, video_path, original_language, target_language):
         self.video_path = video_path
         self.original_language = original_language
         self.target_language = target_language