Oh I see, Thanks Matt and Frank.
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Bhavesh Khamesra
Graduate Student
Centre of Relativistic Astrophysics
Georgia Institute of Technology
I had this problem the other day too. It appears that the ssl version of the documentation page points it's links to https://<insert doc url> but the documentation is only being served over http.
If you use http://einsteintoolkit.org/documentation.html the links work as expected.
Matt