Fix link for TouristAttraction
Fix link for TouristAttraction

The link was linking to https://schema.org/TouristAttractions, but it
should link to https://schema.org/TouristAttraction.

schemaorg/schemaorg,vholland/schemaorg,schemaorg/schemaorg,vholland/schemaorg,schemaorg/schemaorg,schemaorg/schemaorg,vholland/schemaorg,schemaorg/schemaorg,vholland/schemaorg