docs: add zeroconf changes

Signed-off-by:  Eric Callahan <arksine.code@gmail.com>

docs/changelog.md

@@ -13,6 +13,8 @@ The format is based on [Keep a Changelog].
 - **notifier**: Added support for a configurable `body_format`
 - **power**: Added support for generic `http` type switches.
 - **metadata**: Added support for OrcaSlicer
+- **zeroconf**: Added support for a configurable mDNS hostname.
+- **zeroconf**: Added support for UPnP/SSDP Discovery.
 
 ### Fixed
 

docs/configuration.md

@@ -2096,13 +2096,20 @@ gcode:
 ```
 
 ### `[zeroconf]`
-Enable Zeroconf service registration allowing external services to more
-easily detect and use Moonraker instances.
+Enables support for Zeroconf (Apple Bonjour) discovery, allowing external services
+detect and use Moonraker instances.
 
 ```ini
 # moonraker.conf
 
 [zeroconf]
+mdns_hostname:
+#   The hostname used when registering the multicast DNS serivce.
+#   The instance will be available at:
+#       http://{mdns_hostname}.local:{port}/
+#   The default is the operating system's configured hostname.
+enable_ssdp:
+#   Enables discovery over UPnP/SSDP in ad.  The default is False
 ```
 
 ### `[button]`