Update tutorial.ipynb

tutorial.ipynb

@@ -898,7 +898,7 @@
       "source": [
         "# Tensorboard (optional)\n",
         "%load_ext tensorboard\n",
-        "%tensorboard --logdir runs"
+        "%tensorboard --logdir runs/train"
       ],
       "execution_count": null,
       "outputs": []
@@ -1218,4 +1218,4 @@
       "outputs": []
     }
   ]
-}
+}