Update configuration.md

[bjarnef]

Description

What did you add/update/change?
Adding Umbraco UI Builder should be added to Startup.cs - not Program.cs.

Type of suggestion

• Typo/grammar fix
• Updated outdated content
• New content
• Updates related to a new version
• Other

Product & version (if relevant)

Deadline (if relevant)

When should the content be published?

[sofietoft]

Thanks for the PR @bjarnef ! 💪

If I'm not mistaken, the Startup.cs file is not part of Umbraco 14. So, perhaps this should be added to a different version of the docs for this product? 🤔

[bjarnef]

@sofietoft yes, it seems you are correct.

I updated it in v13 instead, in v11 and v12 it did use Startup.cs.
However as Startup.cs can be used in existing/upgraded projects, I am in double if a clean v13 install use the new minimal API including only Program.cs.

[sofietoft]

Yes, I believe you're right that the Startup.cs file can still be used in 13, so it make sense to update that article!
Instead of replacing Program.cs here, perhaps instead we could add a line saying something like:

Alternatively, if your project is upgraded from earlier versions, you can add the configuration to the Startup.cs file.