fix reconstruct_hot3d docstring example path

hot3d/reconstruct_hot3d.py

@@ -12,7 +12,7 @@ Requirements: huggingface_hub, imageio[ffmpeg], imageio-ffmpeg, opencv-python-he
 Usage:
     python hot3d/reconstruct_hot3d.py \
         --workdir  /path/to/hot3d_work \
-        --output-dir hot3d/videos
+        --output-dir hot3d/rgbs
 
     # Pass a HuggingFace token if the dataset is gated:
         --token hf_...