Fix documentation gaps in /host/info API (home-assistant#2780)

Author: mdegat01

docs/api/supervisor/endpoints.md

@@ -1708,6 +1708,11 @@ Return information about the host.
 | llmnr_hostname   | string or null | The hostname currently exposed on the network via LLMNR for host |
 | operating_system | string         | The operating system on the host          |
 | startup_time     | float          | The time in seconds it took for last boot |
+| disk_life_time   | float or null  | Percentage of estimated disk lifetime used (0–100). Not all disks provide this information, returns `null` if unavailable. |
+| timezone         | string         | The current timezone of the host. |
+| dt_utc           | string         | Current UTC date/time of the host in ISO 8601 format. |
+| dt_synchronized  | bool           | `true` if the host is synchronized with an NTP service. |
+| use_ntp          | bool           | `true` if the host is using an NTP service for time synchronization. |
 
 **Example response:**
 
@@ -1729,7 +1734,13 @@ Return information about the host.
   "boot_timestamp": 1234567788,
   "startup_time": 12.345,
   "broadcast_llmnr": true,
-  "broadcast_mdns": false
+  "broadcast_mdns": false,
+  "virtualization": "",
+  "disk_life_time": 10.0,
+  "timezone": "Europe/Brussels",
+  "dt_utc": "2025-09-08T12:00:00.000000+00:00",
+  "dt_synchronized": true,
+  "use_ntp": true
 }
 ```
 
@@ -2204,7 +2215,7 @@ Returns a dict with selected keys from other `/*/info` endpoints.
   "channel": "stable",
   "logging": "info",
   "state": "running",
-  "timezone": "Europe/Tomorrowland"
+  "timezone": "Europe/Brussels"
 }
 ```