update changelog

Author: aspeddro

CHANGELOG.md

@@ -17,6 +17,9 @@
 - Inlay Hints (experimetal). `rescript.settings.inlayHints.enable: true`. Turned off by default.
 - Code Lenses for functions (experimetal). `rescript.settings.codeLens: true`. Turned off by default.
 - Markdown code blocks tagged as `rescript` now get basic syntax highlighting.
+#### :bug: Bug Fix
+
+- Fix Incorrect rendering on the right of `external`
 
 ## v1.4.2