update docs for elementwise-lambda-layer (#587)

* update docs for elementwise-lambda-layer

* update changelog

* fix codacy

Author: zsdonghao

CHANGELOG.md

@@ -81,6 +81,7 @@ To release a new version, please update the changelog as followed:
 
 ### Changed
 - Tensorflow CPU & GPU dependencies moved to separated requirement files in order to allow PyUP.io to parse them (by @DEKHTIARJonathan in #573)
+- The document of LambdaLayer for linking it with ElementwiseLambdaLayer (by @zsdonghao in #587)
 
 ### Deprecated
 
@@ -96,7 +97,7 @@ To release a new version, please update the changelog as followed:
 ### Dependencies Update
 
 ### Contributors
-@lgarithm @DEKHTIARJonathan @2wins @One-sixth
+@lgarithm @DEKHTIARJonathan @2wins @One-sixth @zsdonghao
 
 
 ## [1.8.5] - 2018-05-09

tensorlayer/layers/importer.py

@@ -17,7 +17,7 @@
 
 
 class LambdaLayer(Layer):
-    """A layer that takes a user-defined function using TensorFlow Lambda.
+    """A layer that takes a user-defined function using TensorFlow Lambda, for multiple inputs see :class:`ElementwiseLambdaLayer`.
 
     Parameters
     ----------

tensorlayer/layers/merge.py

@@ -13,7 +13,7 @@
 
 
 class ConcatLayer(Layer):
-    """A layer that concats multiple tensors according to given axis..
+    """A layer that concats multiple tensors according to given axis.
 
     Parameters
     ----------