Try fixing link

Author: jorgensd

gsoc/gsoc.md

@@ -21,4 +21,4 @@ The FEniCS Project has participated in the [Google Summer of Code](https://summe
 ## 2017
 
 - Ivan Yashchuk (Aalto University): [Develop assembly of finite element forms on quadrilateral and hexahedral meshes in FEniCS](https://nbviewer.org/gist/IvanYashchuk/48bff62b155e31f85de975b24b23e4cb/)
-- Michal Habera (Charles University, Prague): [Develop XDMF format for visualisation and checkpointing](https://github.com/michalhabera/gsoc-summary/blob/master/README.md/)
+- Michal Habera (Charles University, Prague): [Develop XDMF format for visualisation and checkpointing](https://github.com/michalhabera/gsoc-summary/blob/master/README.md)