added appropriate brackets to arrays, addressed spacing
added a hyperlink to the language tag lookup
added brackets
corrected spacing, added brackets, and changed file format to MIME
Update catalog-template.json
corrected misplaced comma
changed file format to mime type
added mime types to format, added missing brackets to arrays
making the spacing in the examples consistent, simplified some smart quotes
modified the examples of arrays to show those with single entries, too
removing the outdated reference to xml and rdf-a sample files
Merge pull request #239 from project-open-data/making-arrays-consistent-in-examples

Made several corrections to the sample/template files and examples on the schema page