Add Marija Milicevic to humans.txt (#45577)

## I have read the
[CONTRIBUTING.md](https://github.com/supabase/supabase/blob/master/CONTRIBUTING.md)
file.

YES

## What kind of change does this PR introduce?

docs update

## What is the current behavior?

Please link any relevant issues here.

## What is the new behavior?

Feel free to include screenshots if it includes visual changes.


## Additional context

Add any other context or screenshots.


<!-- This is an auto-generated comment: release notes by coderabbit.ai
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## Summary by CodeRabbit

* **Chores**
  * Added a new team member to the contributor list.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

apps/docs/public/humans.txt

@@ -177,6 +177,7 @@ Manuel Mendez
 Manan Gupta
 Marcus Weiner
 Margarita Sandomirskaia
+Marija Milicevic
 Mark Burggraf
 Matthew Hambright
 Matt Hudson