rename file name (GoogleCloudPlatform#2103)

Author: merla18

…recasting:energy_price_forecasting.ipynb …recasting/energy_price_forecasting.ipynbtables/automl/notebooks/energy_price_forecasting/energy_price_forecasting:energy_price_forecasting.ipynb renamed to tables/automl/notebooks/energy_price_forecasting/energy_price_forecasting.ipynb tables/automl/notebooks/energy_price_forecasting/energy_price_forecasting:energy_price_forecasting.ipynb renamed to tables/automl/notebooks/energy_price_forecasting/energy_price_forecasting.ipynb

@@ -724,4 +724,4 @@
       ]
     }
   ]
-}
+}