Mention Editing Build-time Variables in deployment Guides

[ShubhamPalriwala]

What does this PR do?

We faced quite a few queries about people trying to edit the NEXT_PUBLIC_ and since they are configured at build-time, the changes are not reflected resulting in a bad UX! This PR adds a Note and a link to the From Source page to the other 2 deployment guides ie the Docker and the Single Script setup Guide.

Type of change

• Enhancement (small improvements)
• This change requires a documentation update

Checklist

• Added a screen recording or screenshots to this PR
• Filled out the "How to test" section in this PR
• Read the contributing guide
• Self-reviewed my own code
• Commented on my code in hard-to-understand bits
• Ran pnpm build
• Checked for warnings, there are none
• Removed all console.logs
• Merged the latest changes from main onto my branch with git pull origin main
• My changes don't cause any responsiveness issues
• Updated the Formbricks Docs if changes were necessary

[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Comments	Updated (UTC)
formbricks-cloud	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Aug 31, 2023 2:47pm

1 Ignored Deployment

Name	Status	Preview	Comments	Updated (UTC)
formbricks-com	⬜️ Ignored (Inspect)	Visit Preview		Aug 31, 2023 2:47pm

[jobenjada]

Thanks a lot Shub! 😊