add `How to contribute to abp.io as a frontend developer` docs

docs/en/Contribution/How-to-Contribute-abp.io-as-a-frontend-developer.md

@@ -11,6 +11,12 @@
 - Abp CLI https://docs.abp.io/en/abp/latest/cli
 - A code editor
 
+Note: This arcticle prepare Windows OS. You may change the path type of your OS. an Example
+
+Windows: `templates\app\aspnet-core\src\MyCompanyName.MyProjectName.DbMigrator\appsettings.json`
+
+Unix: `templates/app/aspnet-core/src/MyCompanyName.MyProjectName.DbMigrator/appsettings.json`
+
 ### Sample docker commands
 
 You need to install SQL Server and Redis. You can install these programs without docker, but my example uses docker containers. Your computer should have Docker Engine. Then open the terminal en execute the commands one by one.

docs/en/Contribution/Index.md

@@ -70,3 +70,7 @@ If you want to make a change on a specific resource file, you can find the file
 ## Bug Report
 
 If you find any bug, please [create an issue on the Github repository](https://github.com/abpframework/abp/issues/new).
+
+## Setup Frontend Development Environment
+
+[How to contribute to abp.io as a frontend developer](How-to-Contribute-abp.io-as-a-frontend-developer.md)