[scripts.saliency_completeness] Improve cli docs

src/ptbench/scripts/saliency_completeness.py

@@ -25,7 +25,7 @@ logger = setup(__name__.split(".")[0], format="%(levelname)s: %(message)s")
 
    .. code:: sh
 
-      ptbench saliency-completeness -vv pasa tbx11k-v1-healthy-vs-atb --device="cuda" --weight=path/to/model_final.ckpt --output-folder=path/to/completeness-scores/
+      ptbench saliency-completeness -vv pasa tbx11k-v1-healthy-vs-atb --device="cuda" --weight=path/to/model-at-lowest-validation-loss.ckpt --output-folder=path/to/completeness-scores/
 
 """,
 )