Updated contributing

Author: helto4real

CONTRIBUTING.md

@@ -6,10 +6,18 @@ You will find the docs on [github here](https://github.com/net-daemon/docs).
 ## How to contribute
 
 - Fork the repository
-- Write coded and tests
+- Write code and tests
 - Make sure the tests run before PR
 - Create a pullrequest against the NetDaemon Dev branch
 
+## Code quality
+
+- Use default linter and fix all warnings
+
+## Architecture
+
+- If you want to do bigger design changes, goto Discord group and discuss in #dev channel, see https://discord.gg/K3xwfcX
+
 ## Features and Issues
 
 Check if there are features to implement or file issued at [https://github.com/net-daemon/netdaemon/issues](https://github.com/net-daemon/netdaemon/issues)