fix: typo in configure.ac.in

Author: robert-burger

configure.ac.in

@@ -2,7 +2,7 @@
 # Process this file with autoconf to produce a configure script.
 
 AC_PREREQ([2.63])
-AC_INIT([module_tty], [PACKAGE_VERSION], [Robert Burger <robert.burger@dlr.de>)
+AC_INIT([module_tty], [PACKAGE_VERSION], [Robert Burger <robert.burger@dlr.de>])
 AC_CONFIG_HEADERS([config.h])
 AC_CONFIG_MACRO_DIR([m4])
 AM_INIT_AUTOMAKE([-Wall -Werror foreign subdir-objects silent-rules])