[GUIDE DOCS]: Screenshots in "submit-your-first-pr-cli.md"

[arymehta]

###Guide Docs

I noticed that one of the TODO's in the guide file is to add screenshots of forking the repo, and the commands we have to type in order to set it up. (Also read in the documentation that PR's are welcome)

Would you be up for working on this?

Hell yeah!

Pre-Submission Checklist

• I have checked this issue has not already been raised
• I've searched the docs for an answer
• I agree to follow thr Code of Conduct

[arymehta]

I would love to work on this as my first PR
If anyone would assign it to me :D