documentation: Fix missing hosts DNS server

docs/configuration/dns/server/hosts.md

@@ -0,0 +1,70 @@
+---
+icon: material/new-box
+---
+
+!!! question "Since sing-box 1.12.0"
+
+# Hosts
+
+### Structure
+
+```json
+{
+  "dns": {
+    "servers": [
+      {
+        "type": "hosts",
+        "tag": "",
+
+        "path": [],
+        "predefined": {}
+      }
+    ]
+  }
+}
+```
+
+!!! note ""
+
+    You can ignore the JSON Array [] tag when the content is only one item
+
+### Fields
+
+#### path
+
+List of paths to hosts files.
+
+`/etc/hosts` is used by default.
+
+`C:\Windows\System32\Drivers\etc\hosts` is used by default on Windows.
+
+Example:
+
+```json
+{
+  // "path": "/etc/hosts"
+  
+  "path": [
+    "/etc/hosts",
+    "$HOME/.hosts"
+  ]
+}
+```
+
+#### predefined
+
+Predefined hosts.
+
+Example:
+
+```json
+{
+  "predefined": {
+    "www.google.com": "127.0.0.1",
+    "localhost": [
+      "127.0.0.1",
+      "::1"
+    ]
+  }
+}
+```