Update shortcodes-and-filters.yml (Adds typst-function filter) (#1281)

Author: christopherkenny

docs/extensions/listings/shortcodes-and-filters.yml

@@ -433,3 +433,9 @@
   author: "[Mickaël CANOUIL](https://github.com/mcanouil)"
   description: |
     Use GitHub short references (commits, issues, discussions, and pull request) directly into your Quarto documents.
+
+- name: typst-function
+  path: https://github.com/christopherkenny/typst-function
+  author: "[Christopher T. Kenny](https://github.com/christopherkenny)"
+  description: |
+    Output divs and spans as Typst functions.