!19 Update to 2.4.0

From: @lyn1001 
Reviewed-by: @caodongxia 
Signed-off-by: @caodongxia

rubygem-kramdown.spec

@@ -1,10 +1,10 @@
 %global gem_name kramdown
 Name:                rubygem-%{gem_name}
-Version:             2.3.1
+Version:             2.4.0
 Release:             1
 Summary:             A fast pure Ruby yet-another-markdown-parser
 License:             MIT
-URL:                 http://kramdown.rubyforge.org
+URL:                 http://kramdown.gettalong.org
 Source0:             https://rubygems.org/gems/%{gem_name}-%{version}.gem
 BuildRequires:       ruby(release) rubygems-devel rubygem(minitest) >= 5 rubygem(rouge)
 BuildRequires:       rubygem(test-unit) tidy tex tex(acronym.sty) tex(amssymb.sty) rubygem(rexml)
@@ -76,6 +76,9 @@ popd
 %doc %{gem_docdir}
 
 %changelog
+* Thu Apr 20 2023 liyanan <thistleslyn@163.com> - 2.4.0-1
+- upgrade 2.4.0
+
 * Tue Mar 29 2022 liyanan <liyanan32@huawei.com> - 2.3.1-1
 - upgrade 2.3.1