Fix dead links causing failed doc build
Fix dead links causing failed doc build
Peilun-Li/dynet,kamigaito/cnn,Peilun-Li/dynet,cherryc/dynet,Abasyoni/dynet,Peilun-Li/dynet,mitchellstern/dynet,cherryc/dynet,kamigaito/cnn,Abasyoni/dynet,cherryc/dynet,mitchellstern/dynet,Abasyoni/dynet