Polish "Add reference to OpenTelemetry Spring Boot starter"

See spring-projectsgh-40339

Author: izeye

spring-boot-project/spring-boot-starters/README.adoc

@@ -191,7 +191,7 @@ do as they were designed before this was clarified.
 | https://developer.okta.com/[Okta]
 | https://github.com/okta/okta-spring-boot
 
-| https://opentelemetry.io/docs/languages/java/automatic/spring-boot/#opentelemetry-spring-boot-starter[OpenTelemetry]
+| https://opentelemetry.io/[OpenTelemetry]
 | https://github.com/open-telemetry/opentelemetry-java-instrumentation/tree/main/instrumentation/spring/starters/spring-boot-starter
 
 | https://www.optaplanner.org/[OptaPlanner]