Update Contribution Guide To Help Solve Potential Setup Error

[ivorytoast]

Summary

When I was following the contribution guide, all the steps worked except:

Tip: you can also start VSCode from inside your Devbox shell with devbox run code.

I was getting an error stating the command code was not found. I checked the file devbox run code was running, which is .devbox/gen/scripts/code.sh. In the file (line 3), it tries to run code . -> which only works if you have installed the Visual Studio shell command.

How was it tested?

Steps I took:

1. I could not run the command successfully without installing the Visual Studio shell command.
2. I installed the shell command.
3. The command ran successfully.

Why Is It Useful?

This is useful for developers who do not use Visual Studio Code as their primary IDE, therefore increasing the chances encountering an error on the beginning setup steps

[Lagoja]

Thanks @ivorytoast, this is a really helpful addition to the docs!