Fix shape comment in extract_hidden_states example (#38723)

Signed-off-by: Fynn Schmitt-Ulms <fschmitt@redhat.com>

examples/offline_inference/extract_hidden_states.py

@@ -54,5 +54,5 @@ with tempfile.TemporaryDirectory() as tmpdirname:
             print("Extracted token ids:", token_ids)  # Matches prompt token ids
             print(
                 "Extracted hidden states shape:", hidden_states.shape
-            )  # [num_hidden_layers, prompt len, hidden size]
+            )  # [prompt len, num_hidden_layers, hidden size]
             print("Extracted hidden states:", hidden_states)