Fix link in README
Fix link in README

The link to the example markdown post had 2014-1-28 in its link rather than 2014-01-28
hungvandinh/hungvandinh.github.io,bjb568/stack-blog,hungvandinh/hungvandinh.github.io,hungvandinh/hungvandinh.github.io,NaeemShaikh/stack-blog.github.io,dgrtwo/stack-blog,StackExchange/stack-blog,bjb568/stack-blog,StackExchange/stack-blog,dgrtwo/stack-blog,hungvandinh/hungvandinh.github.io,jericson/stack-blog,StackExchange/stack-blog,jericson/stack-blog,Zizouz212/stack-blog,jericson/stack-blog,dgrtwo/stack-blog,jericson/stack-blog,Zizouz212/stack-blog,StackExchange/blog,hungvandinh/hungvandinh.github.io,StackExchange/blog,bjb568/stack-blog,NaeemShaikh/stack-blog.github.io,StackExchange/blog,Zizouz212/stack-blog,StackExchange/stack-blog,NaeemShaikh/stack-blog.github.io,StackExchange/stack-blog,Zizouz212/stack-blog,NaeemShaikh/stack-blog.github.io,dgrtwo/stack-blog,NaeemShaikh/stack-blog.github.io,Zizouz212/stack-blog,jericson/stack-blog,StackExchange/blog,StackExchange/blog,dgrtwo/stack-blog,bjb568/stack-blog