[Doc]improve install.md,test=doc_fix (#1200)

* [Doc]improve install.md,test=doc_fix

* test=doc_fix

docs/source/install.md

@@ -32,6 +32,8 @@ You need to install `Visual Studio` to make the C++ compilation environment.
 
 https://visualstudio.microsoft.com/visual-cpp-build-tools/
 
+You can also see [#1195](https://github.com/PaddlePaddle/PaddleSpeech/discussions/1195) for more help.
+
 #### Mac
 ```bash
 brew install gcc

docs/source/install_cn.md

@@ -29,6 +29,8 @@ conda install -y -c conda-forge sox libsndfile bzip2
 
 https://visualstudio.microsoft.com/visual-cpp-build-tools/
 
+你可以前往讨论区[#1195](https://github.com/PaddlePaddle/PaddleSpeech/discussions/1195)获取更多帮助。
+
 #### Mac
 ```bash
 brew install gcc