!787 synchronization_training_and_evaluation.md: Modify some error.

Merge pull request !787 from lvmingfu/master

tutorials/notebook/synchronization_training_and_evaluation.ipynb

@@ -244,8 +244,8 @@
     "        cur_epoch = cb_param.cur_epoch_num\n",
     "        if cur_epoch % self.eval_per_epoch == 0:\n",
     "            acc = self.model.eval(self.eval_dataset, dataset_sink_mode=True)\n",
-    "            epoch_per_eval[\"epoch\"].append(cur_epoch)\n",
-    "            epoch_per_eval[\"acc\"].append(acc[\"Accuracy\"])\n",
+    "            self.epoch_per_eval[\"epoch\"].append(cur_epoch)\n",
+    "            self.epoch_per_eval[\"acc\"].append(acc[\"Accuracy\"])\n",
     "            print(acc)\n"
    ]
   },

tutorials/source_zh_cn/advanced_use/synchronization_training_and_evaluation.md

-# 同步训练和验证模型
+# 同步训练和验证模型
 
 <!-- TOC -->
 
@@ -58,8 +58,8 @@ class EvalCallBack(Callback):
         cur_epoch = cb_param.cur_epoch_num
         if cur_epoch % self.eval_per_epoch == 0:
             acc = self.model.eval(self.eval_dataset, dataset_sink_mode=True)
-            epoch_per_eval["epoch"].append(cur_epoch)
-            epoch_per_eval["acc"].append(acc["Accuracy"])
+            self.epoch_per_eval["epoch"].append(cur_epoch)
+            self.epoch_per_eval["acc"].append(acc["Accuracy"])
             print(acc)
 
 ```