Refactor inbound documetation

docs/configuration/inbound/direct.md

@@ -4,29 +4,22 @@
 
 ```json
 {
-  "inbounds": [
-    {
-      "type": "direct",
-      "tag": "direct-in",
-      
-      "listen": "::",
-      "listen_port": 5353,
-      "tcp_fast_open": false,
-      "sniff": false,
-      "sniff_override_destination": false,
-      "domain_strategy": "prefer_ipv6",
-      "udp_timeout": 300,
-      "proxy_protocol": false,
+  "type": "direct",
+  "tag": "direct-in",
+  
+  ... // Listen Fields
 
-      "network": "udp",
-      "override_address": "1.0.0.1",
-      "override_port": 53
-    }
-  ]
+  "network": "udp",
+  "override_address": "1.0.0.1",
+  "override_port": 53
 }
 ```
 
-### Direct Fields
+### Listen Fields
+
+See [Listen Fields](/configuration/shared/listen) for details.
+
+### Fields
 
 #### network
 
@@ -40,50 +33,4 @@ Override the connection destination address.
 
 #### override_port
 
-Override the connection destination port.
-
-### Listen Fields
-
-#### listen
-
-==Required==
-
-Listen address.
-
-#### listen_port
-
-==Required==
-
-Listen port.
-
-#### tcp_fast_open
-
-Enable tcp fast open for listener.
-
-#### sniff
-
-Enable sniffing.
-
-See [Protocol Sniff](/configuration/route/sniff/) for details.
-
-#### sniff_override_destination
-
-Override the connection destination address with the sniffed domain.
-
-If the domain name is invalid (like tor), this will not work.
-
-#### domain_strategy
-
-One of `prefer_ipv4` `prefer_ipv6` `ipv4_only` `ipv6_only`.
-
-If set, the requested domain name will be resolved to IP before routing.
-
-If `sniff_override_destination` is in effect, its value will be taken as a fallback.
-
-#### udp_timeout
-
-UDP NAT expiration time in seconds, default is 300 (5 minutes).
-
-#### proxy_protocol
-
-Parse [Proxy Protocol](https://www.haproxy.org/download/1.8/doc/proxy-protocol.txt) in the connection header.
+Override the connection destination port.