update examples, fix site file extension check
Fixed examples:
- replace github with gitlab URLs (and references to local docs directory)
- site string is no longer supported, must use site file
- use nshm-conus model instead of nshm-cous-2008
- increase memory in nshmp-haz aliases
- other edits
HazardCalc was insisting that sites files had csv or json extension and did not allow geojson
Edited by Powers, Peter M.