Convert License tag to SPDX.

Drop license tags for no longer bundled mathml files.

GAPDoc.spec

@@ -11,8 +11,7 @@ Version:        1.6.6
 Release:        2%{?dist}
 Summary:        GAP documentation tool
 
-# The package is all GPLv2+ except for some of the mathml files
-License:        GPLv2+ and MPLv1.1 and W3C
+License:        GPL-2.0-or-later
 URL:            https://www.math.rwth-aachen.de/~Frank.Luebeck/%{name}/
 Source0:        https://www.math.rwth-aachen.de/~Frank.Luebeck/%{name}/%{name}-%{version}.tar.bz2
 BuildArch:      noarch
@@ -169,6 +168,10 @@ rm -f %{buildroot}%{_gap_dir}/pkg/%{name}/{CHANGES,GPL,README.md}
 %{_gap_dir}/pkg/%{name}/example/
 
 %changelog
+* Tue Aug 16 2022 Jerry James <loganjerry@gmail.com> - 1.6.6-2
+- Convert License tag to SPDX
+- Drop license tags for no longer bundled mathml files
+
 * Wed Jul 20 2022 Fedora Release Engineering <releng@fedoraproject.org> - 1.6.6-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_37_Mass_Rebuild