fix(docs): update documentation for prefer-ip configuration options

Author: SteKoe

spring-boot-admin-docs/src/site/docs/11-upgrading/01-spring-boot-admin-4.md

@@ -165,16 +165,16 @@ spring:
 
 **Available Options:**
 
-| Value                 | Description                                          |
-|-----------------------|------------------------------------------------------|
-| `IP`                  | Use IP address (equivalent to old `prefer-ip: true`) |
-| `HOST_NAME`           | Use hostname (equivalent to old `prefer-ip: false`)  |
-| `CANONICAL_HOST_NAME` | Use canonical hostname                               |
+| Value                 | Description                                                    |
+|-----------------------|----------------------------------------------------------------|
+| `IP`                  | Use IP address (equivalent to old `prefer-ip: true`)           |
+| `HOST_NAME`           | Use hostname                                                   |
+| `CANONICAL_HOST_NAME` | Use canonical hostname (equivalent to old `prefer-ip: false`)  |
 
 **Action Required:**
 
 - Search your configuration files for `prefer-ip`
-- Replace with `service-host-type: IP` (if `prefer-ip: true`) or `service-host-type: HOST_NAME` (if `prefer-ip: false`)
+- Replace with `service-host-type: IP` (if `prefer-ip: true`) or `service-host-type: CANONICAL_HOST_NAME` (if `prefer-ip: false`)
 
 ### 4. Jolokia Compatibility