SpringBoot Fix invalid link in Spring Boot 3.0 Migration Guide (wiki)

dependency management for 3.0.x is an invalid URL.

The link below seems correct. https://docs.spring.io/spring-boot/docs/3.0.x/reference/html/dependency-versions.html#appendix.dependency-versions

Comment From: wilkinsona

Thanks for pointing this out. The migration guide has been updated.