convert GPLv2 license to SPDX

This is part of https://fedoraproject.org/wiki/Changes/SPDX_Licenses_Phase_4

wfuzz.spec

@@ -1,9 +1,10 @@
 Name:           wfuzz
 Version:        3.1.0
-Release:        14%{?dist}
+Release:        15%{?dist}
 Summary:        Web fuzzer
 
-License:        GPLv2
+# Automatically converted from old format: GPLv2 - review is highly recommended.
+License:        GPL-2.0-only
 URL:            http://wfuzz.io
 Source0:        https://github.com/xmendez/wfuzz/archive/v%{version}/%{name}-%{version}.tar.gz
 BuildArch:      noarch
@@ -60,6 +61,9 @@ rm -rf html/.{doctrees,buildinfo}
 %license LICENSE
 
 %changelog
+* Mon Jul 29 2024 Miroslav Suchý <msuchy@redhat.com> - 3.1.0-15
+- convert license to SPDX
+
 * Sat Jul 20 2024 Fedora Release Engineering <releng@fedoraproject.org> - 3.1.0-14
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_41_Mass_Rebuild