updated the tfsharp links (#1181)

docs/Basic-Guide.md

 
 In order to use the ML-Agents toolkit within Unity, you need to change some
 Unity settings first. Also [TensorFlowSharp
-plugin](https://s3.amazonaws.com/unity-ml-agents/0.4/TFSharpPlugin.unitypackage)
+plugin](https://s3.amazonaws.com/unity-ml-agents/0.5/TFSharpPlugin.unitypackage)
 is needed for you to use pre-trained model within Unity, which is based on the
 [TensorFlowSharp repo](https://github.com/migueldeicaza/TensorFlowSharp).
 
 
 ![Project Settings](images/project-settings.png)
 
-[Download](https://s3.amazonaws.com/unity-ml-agents/0.4/TFSharpPlugin.unitypackage)
+[Download](https://s3.amazonaws.com/unity-ml-agents/0.5/TFSharpPlugin.unitypackage)
 the TensorFlowSharp plugin. Then import it into Unity by double clicking the
 downloaded file.  You can check if it was successfully imported by checking the
 TensorFlow files in the Project window under **Assets** > **ML-Agents** >

docs/Using-TensorFlow-Sharp-in-Unity.md

 ## Requirements
 
 * Unity 2017.4 or above
-* Unity TensorFlow Plugin ([Download here](https://s3.amazonaws.com/unity-ml-agents/0.4/TFSharpPlugin.unitypackage))
+* Unity TensorFlow Plugin ([Download here](https://s3.amazonaws.com/unity-ml-agents/0.5/TFSharpPlugin.unitypackage))
 
 ## Using TensorFlowSharp with ML-Agents
 

docs/localized/zh-CN/docs/Getting-Started-with-Balance-Ball.md

 
 1. 确保 TensorFlowSharp 插件位于 `Assets` 文件夹中。
 可在
-[此处](https://s3.amazonaws.com/unity-ml-agents/0.4/TFSharpPlugin.unitypackage)下载一个包含 TF# 的 Plugins 文件夹。
+[此处](https://s3.amazonaws.com/unity-ml-agents/0.5/TFSharpPlugin.unitypackage)下载一个包含 TF# 的 Plugins 文件夹。
 下载后，双击并将其导入。您可以在 Project 选项卡中
 （位于 `Assets` > `ML-Agents` > `Plugins` > `Computer` 下）
 检查 TensorFlow 的相关文件来查看是否安装成功

docs/localized/zh-CN/docs/Installation.md

 
 ## Unity 包
 
-您可以通过 Unity 包的形式下载TensorFlowSharp 插件（[AWS S3链接](https://s3.amazonaws.com/unity-ml-agents/0.4/TFSharpPlugin.unitypackage)，[百度盘链接](https://pan.baidu.com/s/1s0mJN8lvuxTcYbs2kL2FqA)）
+您可以通过 Unity 包的形式下载TensorFlowSharp 插件 ([AWS S3链接](https://s3.amazonaws.com/unity-ml-agents/0.5/TFSharpPlugin.unitypackage)，[百度盘链接](https://pan.baidu.com/s/1s0mJN8lvuxTcYbs2kL2FqA))
 
 ## 帮助