Dead links in observability doc

[michaldo]

documentation/spring-boot-docs/src/docs/antora/modules/reference/pages/actuator/observability.adoc

Section: Micrometer Observation Annotations support

Sentence: Please refer to the Micrometer, Micrometer Observation and Micrometer Tracing reference docs.

All 3 dead

[wilkinsona]

The links are fine in 3.4.x and 3.5.x. This only affects Boot 4.0 where we're trying to link to the latest docs, but using a versioned URL.

[wilkinsona]

This has been fixed with some changes on the Micrometer side of things.