replace license with spdx.org variant

OBS-URL: https://build.opensuse.org/package/show/openSUSE:Factory/check?expand=0&rev=17

check.spec

@@ -20,7 +20,7 @@
 Name:           check
 Version:        0.9.8
 Release:        3
-License:        LGPLv2.1+
+License:        LGPL-2.1+
 Summary:        Unit Test Framework for C
 Url:            http://check.sourceforge.net/
 Group:          Development/Libraries/C and C++
@@ -38,7 +38,7 @@ signals. The output of unit tests can be used within source code
 editors and IDEs.
 
 %package devel
-License:        LGPLv2.1+
+License:        LGPL-2.1+
 Summary:        Unit Test Framework for C
 Group:          Development/Libraries/C and C++
 Requires:       %{name} = %{version}