Really mark WithPort as deprecated

The "Deprecated:" string must start a paragraph!
https://stackoverflow.com/questions/7849663/how-do-you-mark-code-as-deprecated-in-go

options.go

@@ -226,6 +226,7 @@ func WithDisallowUnknownFields(b bool) func(*Server) {
 // WithPort sets the port of the server. For example, 8080.
 // If not specified, the default port is 9999.
 // If you want to use a different address, use [WithAddr] instead.
+//
 // Deprecated: Please use fuego.WithAddr(addr string)
 func WithPort(port int) func(*Server) {
 	return func(s *Server) { s.Server.Addr = fmt.Sprintf("localhost:%d", port) }