Update release notes

Author: dklilley

README.md

@@ -27,8 +27,11 @@ MATLAB language server supports these editors by installing the corresponding ex
 
 ### Unreleased
 
+Added:
+* Improvements to code folding (requires MATLAB R2024b or later)
+
 Fixed:
-* Allow connection to MATLAB when a single quote appears in the file path
+* Allow connection to MATLAB when a single quote appears in the extension installation path
 
 ### 1.2.3
 Release date: 2024-06-14