Update ReadMe.md

tensorflow2fluid/doc/ReadMe.md

@@ -81,7 +81,7 @@
 | 72   | [tf.nn.dynamic_rnn](https://www.tensorflow.org/api_docs/python/tf/nn/dynamic_rnn) | [fluid.layers.DynamicRNN](http://paddlepaddle.org/documentation/docs/zh/1.3/api_cn/layers_cn.html#DynamicRNN) | [差异对比](tf.nn.dynamic_rnn.md)                       |
 | 73   | [tf.nn.l2_normalize](https://www.tensorflow.org/api_docs/python/tf/nn/l2_normalize) | [fluid.layers.l2_normalize](http://paddlepaddle.org/documentation/docs/zh/1.3/api_cn/layers_cn.html#l2_normalize) | [差异对比](tf.nn.l2_normalize.md)                      |
 | 74   | [tf.nn.leaky_relu](https://www.tensorflow.org/api_docs/python/tf/nn/leaky_relu) | [fluid.layers.leaky_relu](http://paddlepaddle.org/documentation/docs/zh/1.3/api_cn/layers_cn.html#paddle.fluid.layers.leaky_relu) | 接口对应                                               |
-| 75   | [tf.nn.lrn](https://www.tensorflow.org/api_docs/python/tf/nn/lrn) | [fluid.layers.lrn](http://paddlepaddle.org/documentation/docs/zh/1.3/api_cn/layers_cn.html#paddle.fluid.layers.lrn) | 接口对应                                               |
+| 75   | [tf.nn.lrn](https://www.tensorflow.org/api_docs/python/tf/nn/lrn) | [fluid.layers.lrn](http://paddlepaddle.org/documentation/docs/zh/1.3/api_cn/layers_cn.html#paddle.fluid.layers.lrn) | [差异对比](tf.nn.lrn.md)                                               |
 | 76   | [tf.nn.max_pool](https://www.tensorflow.org/api_docs/python/tf/nn/max_pool) | [fluid.layers.pool2d](http://paddlepaddle.org/documentation/docs/zh/1.3/api_cn/layers_cn.html#paddle.fluid.layers.pool2d) | [差异对比](tf.nn.max_pool.md)                          |
 | 77   | [tf.nn.raw_rnn](https://www.tensorflow.org/api_docs/python/tf/nn/raw_rnn) | [fluid.layers.DynamicRNN](http://paddlepaddle.org/documentation/docs/zh/1.3/api_cn/layers_cn.html#dynamicrnn) | 接口对应                                               |
 | 78   | [tf.nn.relu](https://www.tensorflow.org/api_docs/python/tf/nn/relu) | [fluid.layers.relu](http://paddlepaddle.org/documentation/docs/zh/1.3/api_cn/layers_cn.html#relu) | 接口对应                                               |