INSTALL: Fix autoreconf documentation

build.sh does much more than just autoreconf

INSTALL

@@ -264,7 +264,7 @@ sensitive.
 Then please do:
 
  $ cd speech-dispatcher-[version]
- $ autoreconf -i
+ $ ./build.sh
 
 Now the configure file should be created and you can proceed like with
 an ordinary instalation.
@@ -276,7 +276,7 @@ Copyright (C) 2010 Rui Batista <ruiandrebatista@gmail.com>
 Copyright (C) 2010 William Hubbs <w.d.hubbs@gmail.com>
 Copyright (C) 2010-2016 Andrei Kholodnyi <andrei.kholodnyi@gmail.com>
 Copyright (C) 2015 Luke Yelavich <themuso@themuso.com>
-Copyright (C) 2018-2020 Samuel Thibault <samuel.thibault@ens-lyon.org>
+Copyright (C) 2018-2020, 2025 Samuel Thibault <samuel.thibault@ens-lyon.org>
 
 This program is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free Software