[DOCUMENTATION] update changelog

Relates: https://projekte.in2code.de/issues/74304

Author: sebastianstein

readme.md

@@ -245,7 +245,7 @@ ddev ssh
 
 | Version | Date       | State        | Description                                                                                                                                                                                                                                   |
 |---------|------------|--------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
-| 13.0.0  | 2025-09-02 | [!!!]FEATURE | Add TYPO3 13 support, various code cleanups: [Commits](https://github.com/in2code-de/in2studyfinder/commits/13.0.0)                                                                                                                           |
+| 13.0.0  | 2025-09-04 | [!!!]FEATURE | Add TYPO3 13 support, various code cleanups: [Commits](https://github.com/in2code-de/in2studyfinder/commits/13.0.0)                                                                                                                           |
 | 12.1.1  | 2025-08-25 | TASK         | Bump nodejs build dependencies. The nodejs modules used to build the JavaScript and CSS have been updated.                                                                                                                                    |
 | 12.1.0  | 2025-07-07 | FEATURE      | Allow backend sorting of filter items, set correct meta tag property type for keywords. For further information see: [Commits](https://github.com/in2code-de/in2studyfinder/commits/12.1.0)                                                   |
 | 12.0.2  | 2025-05-23 | BUGFIX       | Add missing release preparations                                                                                                                                                                                                              |