Fix website example template.
Fix website example template.

Commit 9581d4f allows exampels to not have to wrap javascript inside a
function.  That commit updated the common/index.pug but not the
companion website template.

OpenGeoscience/geojs,Kitware/geojs,Kitware/geojs,OpenGeoscience/geojs,OpenGeoscience/geojs,Kitware/geojs