update CHANGELOG.md

Author: aspeddro

CHANGELOG.md

@@ -16,7 +16,7 @@
 
 - Remove spacing between type definition in clients that do not support markdown links. https://github.com/rescript-lang/rescript-vscode/pull/619
 - Rename custom LSP methods names. https://github.com/rescript-lang/rescript-vscode/pull/611
-- Better performance for Inlay Hints and Codelens.
+- Better performance for Inlay Hints and Codelens. https://github.com/rescript-lang/rescript-vscode/pull/634
 - Accept both `@ns.doc` and the new `@res.doc` for the internal representation of doc comments. And both `@ns.optional` and `@res.optional` for the optional fields. https://github.com/rescript-lang/rescript-vscode/pull/642
 
 #### :bug: Bug Fix