[ENG-9164] [ENG-9241] Update markdown-it-atrules to work with new download links (#781)

- Ticket: [ENG-9164] [ENG-9241]
- Feature flag: n/a

## Summary of Changes
1. Add support for `atrules` for embed osf files in wiki.

Author: nsemets

angular.json

@@ -33,6 +33,7 @@
               "markdown-it-toc-done-right",
               "ace-builds/src-noconflict/ext-language_tools",
               "@traptitech/markdown-it-katex",
+              "@centerforopenscience/markdown-it-atrules",
               "@citation-js/core",
               "@citation-js/plugin-csl"
             ],