Fix mongoose docs generation

PUBLISHED_FROM=331821dcd1f7dc8a94581cd8a9b51aa00a89fddc

docs/c-api/mg_net.h/mg_bind_opt.md

@@ -0,0 +1,27 @@
+---
+title: "mg_bind_opt()"
+decl_name: "mg_bind_opt"
+symbol_kind: "func"
+signature: |
+  struct mg_connection *mg_bind_opt(struct mg_mgr *mgr, const char *address,
+                                    MG_CB(mg_event_handler_t handler,
+                                          void *user_data);
+---
+
+Creates a listening connection.
+
+The `address` parameter specifies which address to bind to. It's format is
+the same as for the `mg_connect()` call, where `HOST` part is optional.
+`address` can be just a port number, e.g. `:8000`. To bind to a specific
+interface, an IP address can be specified, e.g. `1.2.3.4:8000`. By default,
+a TCP connection is created. To create UDP connection, prepend `udp://`
+prefix, e.g. `udp://:8000`. To summarize, `address` parameter has following
+format: `[PROTO://][IP_ADDRESS]:PORT`, where `PROTO` could be `tcp` or
+`udp`.
+
+See the `mg_bind_opts` structure for a description of the optional
+parameters.
+
+Returns a new listening connection or `NULL` on error.
+NOTE: The connection remains owned by the manager, do not free(). 
+