Update to a hopefully more future proof FSF address

Signed-off-by: Blue Swirl <[email protected]>
diff --git a/alpha-dis.c b/alpha-dis.c
index ee7bf66..097f06b 100644
--- a/alpha-dis.c
+++ b/alpha-dis.c
@@ -16,9 +16,8 @@
 the GNU General Public License for more details.
 
 You should have received a copy of the GNU General Public License
-along with this file; see the file COPYING.  If not, write to the Free
-Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
-02110-1301, USA.  */
+along with this file; see the file COPYING.  If not, see
+<http://www.gnu.org/licenses/>. */
 
 #include <stdio.h>
 #include "dis-asm.h"