Clearified documentation and added the required command

The documentation of how to clone the engine repo into your project repo was missing the required command to execute this action.

DEVELOPMENT.md

@@ -2,6 +2,8 @@
 
 To use the engine in your project you have to clone the engine repo into your runtime.
 
+For this you open your CODER console (not RUNTIME console) and type the command ` switchEngine `.
+
 You then have to update your projects package.json with the correct workspaces:
 
 ```json