Update changelog

Author: dragonstyle

news/changelog-1.3.md

@@ -1,3 +1,8 @@
+
+## Article Layout
+
+- Improve the performance of extremely large documents with margin elements by improving the efficiency of positioning the elements.
+
 ## Miscellaneous
 
-- ensure `video` shortcode works with `embed-resources` and `self-contained` ([#3310](https://github.com/quarto-dev/quarto-cli/issues/3310))
+- ensure `video` shortcode works with `embed-resources` and `self-contained` ([#3310](https://github.com/quarto-dev/quarto-cli/issues/3310))