fix(builder): adjust video path in sample

phoenix14t.py

@@ -133,7 +133,7 @@ class Phoenix14T(datasets.GeneratorBasedBuilder):
                 if os.path.exists(video_path):
                     yield idx, {
                         "name": sample["name"],
-                        "video": os.path.join(video_dir, "*.png"),
+                        "video": os.path.join(video_path, "*.png"),
                         "start": sample["start"],
                         "end": sample["end"],
                         "speaker": sample["speaker"],