fix: typo in small checkpoint name

app.py

@@ -216,7 +216,7 @@ def load_model(checkpoint):
         sam2_checkpoint = "./checkpoints/sam2_hiera_tiny.pt"
         model_cfg = "sam2_hiera_t.yaml"
         return [sam2_checkpoint, model_cfg]
-    elif checkpoint == "samll":
+    elif checkpoint == "small":
         sam2_checkpoint = "./checkpoints/sam2_hiera_small.pt"
         model_cfg = "sam2_hiera_s.yaml"
         return [sam2_checkpoint, model_cfg]
@@ -657,4 +657,4 @@ with gr.Blocks(css=css) as demo:
         outputs = [output_propagated, output_video, working_frame, available_frames_to_check, reset_prpgt_brn, mask_final_output]
     )
 
-demo.launch(show_api=False, show_error=True)
+demo.launch(show_api=False, show_error=True)