Update changelog

Author: juliasilge

apps/vscode/CHANGELOG.md

@@ -3,7 +3,7 @@
 ## 1.121.0 (unreleased)
 
 - Add new controls for Positron editor action bar (<https://github.com/quarto-dev/quarto/pull/698>).
-- Improved editor focus preservation behavior.
+- Improve editor focus preservation behavior (<https://github.com/quarto-dev/quarto/pull/699>).
 
 ## 1.120.0 (Release on 2025-04-07)