!1755 modify readme widedeep

Merge pull request !1755 from wukesong/modify-readme

model_zoo/wide_and_deep/run_multinpu_train.sh

 #!/bin/bash
+# Copyright 2020 Huawei Technologies Co., Ltd
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ============================================================================
+
 # bash run_multinpu_train.sh
 execute_path=$(pwd)
 
-export RANK_TABLE_FILE=${execute_path}/rank_table_8p.json
-export RANK_SIZE=8
-export MINDSPORE_HCCL_CONFIG_PATH=${execute_path}/rank_table_8p.json
+# export RANK_TABLE_FILE=${execute_path}/rank_table_8p.json
+# export RANK_SIZE=8
+# export MINDSPORE_HCCL_CONFIG_PATH=${execute_path}/rank_table_8p.json
 
 for((i=0;i<=7;i++));
 do