docs: update changelog for Typst annotation and filename features

Add entry for support of code annotations and filename features in Typst output in version 1.10.

Author: mcanouil

news/changelog-1.10.md

@@ -1,3 +1,7 @@
 All changes included in 1.10:
 
+## Formats
 
+### `typst`
+
+- ([#14170](https://github.com/quarto-dev/quarto-cli/pull/14170)): Add support for code annotations and filename features in Typst output. (author: @mcanouil)