Add back URL for David Lange's webpage. I think this got lost (overwritten) as he put it into the generated diana-hep.github.io repo rather than the diana-hep.github.io-source repo.
Add back URL for David Lange's webpage. I think this got lost (overwritten)
as he put it into the generated diana-hep.github.io repo rather
than the diana-hep.github.io-source repo.

diana-hep/diana-hep.github.io-source,diana-hep/diana-hep.github.io-source,diana-hep/diana-hep.github.io-source