Document the default value of "editorconfig"
Document the default value of "editorconfig"

Also show that it's a valid option in the  config file.
bitwiseman/js-beautify,bitwiseman/js-beautify,bitwiseman/js-beautify,bitwiseman/js-beautify,beautify-web/js-beautify,beautify-web/js-beautify,beautify-web/js-beautify,beautify-web/js-beautify