fix loss inequality for early stopping

Author: cbhyphen

site/en/guide/migrate/early_stopping.ipynb

@@ -486,7 +486,7 @@
         "    # The early stopping strategy: stop the training if `val_loss` does not\n",
         "    # decrease over a certain number of epochs.\n",
         "    wait += 1\n",
-        "    if val_loss > best:\n",
+        "    if val_loss < best:\n",
         "      best = val_loss\n",
         "      wait = 0\n",
         "    if wait >= patience:\n",