Spec URL and spec name fix (helidon-io#4521)

docs/mp/health.adoc

@@ -20,7 +20,6 @@
 :spec-name: MicroProfile Health
 :description: {spec-name} support in Helidon MP
 :keywords: helidon, mp, microprofile, health
-:health-release: {version.lib.microprofile-health}
 :feature-name: MicroProfile Health
 :microprofile-bundle: true
 :rootdir: {docdir}/..
@@ -91,8 +90,7 @@ To enable built-in health checks add the following dependency
 
 == Usage
 
-Helidon MP Health implements MicroProfile Health Checks
-link:http://download.eclipse.org/microprofile/microprofile-health-{health-release}/microprofile-health-spec.pdf[Specification].
+Helidon implements link:{microprofile-health-spec-url}[MicroProfile Health] Specification.
 The spec prescribes how external tools probe a service's health checks and how you
 implement health checks as part of your microservice that are specific to your service's needs.