attributes.asciidoc in j1-template-2022.1.0

- old
+ new

@@ -33,9 +33,11 @@
 
 :url-jekyll-one--core-doc-color-scheme:           https://support.jekyll-one.com/user_guide/core/color_scheme
 
 :url-light-gallery--license:                      http://sachinchoolur.github.io/lightGallery/docs/license.html
 
+:url-material-design-icons--cheatsheet:           https://jekyll.one/pages/public/previewer/mdi_font/
+
 :url-asciidoctor-extensions--lab:                 https://github.com/asciidoctor/asciidoctor-extensions-lab
 :url-asciidoctor-extensions--use-extension:       https://github.com/asciidoctor/asciidoctor-extensions-lab#using-an-extension
 :url-asciidoctor-user-manual--extensions:         http://asciidoctor.org/docs/user-manual/#extensions
 
 :url-roundtrip--data-slider-picker:               /pages/public/learn/roundtrip/data_slider_picker