Add missing reuseaddr flag to udp_bind docs
@@ -2037,6 +2037,7 @@ it's required that it represents a valid datagram socket.
- `port`: `number`
- `flags`: `table` or `nil`
- `ipv6only`: `boolean`
+ - `reuseaddr`: `boolean`
Bind the UDP handle to an IP address and port. Any `flags` are set with a table
with fields `reuseaddr` or `ipv6only` equal to `true` or `false`.
