Add isPreferIp() for correct metadata and fix docs

spring-boot-admin-starter-client/README.md

@@ -21,7 +21,7 @@ The main service that is used is a registrar that registeres the application at
 | spring.boot.admin.client.managementUrl | Client-management-URL to register with. Can be overriden in case the reachable URL is different (e.g. Docker). Must be unique in registry.<br>Default: is guessed based on serviceUrl management.port and management.context-path|
 | spring.boot.admin.client.healthUrl | Client-management-URL to register with. Can be overriden in case the reachable URL is different (e.g. Docker). Must be unique in registry.<br>Default: is guessed based on managementUrl and endpoints.health.id |
 | spring.boot.admin.client.name | Name to register with. Defaults to the ApplicationContexts name. Only set when it should differ.<br>Default: _${spring.application.name}_ if set, spring-boot-application otherwise. |
-| spring.boot.admin.client.preferIpAddress | Use the ip-address rather then the hostname in the guessed urls. It's required to set `server.address` and `management.address`respectively. |
+| spring.boot.admin.client.preferIp | Use the ip-address rather then the hostname in the guessed urls. It's required to set `server.address` and `management.address`respectively. |
 
 ### Other configuration properties
 Options from other spring boot features. These should be set to enable all features.

spring-boot-admin-starter-client/src/main/java/de/codecentric/boot/admin/config/AdminClientProperties.java

@@ -184,6 +184,10 @@ public class AdminClientProperties implements ApplicationListener<ApplicationEve
 		this.preferIp = preferIp;
 	}
 
+	public boolean isPreferIp() {
+		return preferIp;
+	}
+
 	private String createLocalUri(String host, int port) {
 		String scheme = server.getSsl() != null && server.getSsl().isEnabled() ? "https" : "http";
 		return scheme + "://" + host + ":" + port;