Improve README for new contributors

[mandrasch]

The Issue

• Not clear that you need to open https://ddev.com.ddev.site:4321/ in your browser

How This PR Solves The Issue

• add info
• add info for troubleshooting

Manual Testing Instructions

Automated Testing Overview

Related Issue Link(s)

Release/Deployment Notes

[rfay]

Looks good to me, thanks! It does prompt you on ddev start to know what URL to use, and it also shows it in ddev describe. I usually end up using ddev describe a few times. We should probably add an extra launcher custom command or something.

[mandrasch]

Looks good to me, thanks! It does prompt you on ddev start to know what URL to use, and it also shows it in ddev describe. I usually end up using ddev describe a few times. We should probably add an extra launcher custom command or something.

Sure thing 👍

Yeah, I saw the prompt ... but then switched terminals and used ddev launch because I forgot --> this only renders dist/ (also a bit confusing maybe, why a page is suddenly showing up there, because in the beginning there is 403 forbidden)

From my personal experience, ddev describe is often unknown or people forget about it (unfortunately). Always trying to educate them of course. :-D

But these are just small things, motivated people won't be stopped by them of course. :)