added doc links to chapter Other DiscoveryClients (#2036)

Author: andreasfritz

spring-boot-admin-docs/src/main/asciidoc/server-discovery.adoc

@@ -36,7 +36,7 @@ spring:
 ----
 
 ==== Other DiscoveryClients ====
-Spring Boot Admin supports all other implementations of Spring Cloud's `DiscoveryClient` (Eureka, Zookeeper, Consul, ...). You need to add it to the Spring Boot Admin Server and configure it properly.
+Spring Boot Admin supports all other implementations of Spring Cloud's `DiscoveryClient` (https://docs.spring.io/spring-cloud-netflix/docs/current/reference/html/#service-discovery-eureka-clients/[Eureka], https://docs.spring.io/spring-cloud-zookeeper/docs/current/reference/html/#spring-cloud-zookeeper-discovery[Zookeeper], https://docs.spring.io/spring-cloud-consul/docs/current/reference/html/#spring-cloud-consul-discovery[Consul], https://docs.spring.io/spring-cloud-kubernetes/docs/current/reference/html/#discoveryclient-for-kubernetes[Kubernetes], ...). You need to add it to the Spring Boot Admin Server and configure it properly.
 An <<discover-clients-via-spring-cloud-discovery,example setup using Eureka>> is shown above.
 
 ==== Converting ServiceInstances ====