Fix predict_next_note() param

Author: MacalusoJeff

site/en/tutorials/audio/music_generation.ipynb

@@ -1072,7 +1072,7 @@
       "source": [
         "def predict_next_note(\n",
         "    notes: np.ndarray, \n",
-        "    keras_model: tf.keras.Model, \n",
+        "    model: tf.keras.Model, \n",
         "    temperature: float = 1.0) -> tuple[int, float, float]:\n",
         "  \"\"\"Generates a note as a tuple of (pitch, step, duration), using a trained sequence model.\"\"\"\n",
         "\n",