Update extensions/ql-vscode/CHANGELOG.md

Co-authored-by: Robert <robertbrignull@github.com>

Author: aeisenberg

extensions/ql-vscode/CHANGELOG.md

@@ -5,7 +5,7 @@
 - Remove "last updated" information and sorting from variant analysis results view. [#2637](https://github.com/github/vscode-codeql/pull/2637)
 - Links to code on GitHub now include column numbers as well as line numbers. [#2406](https://github.com/github/vscode-codeql/pull/2406)
 - No longer highlight trailing commas for jump to definition.  [#2615](https://github.com/github/vscode-codeql/pull/2615)
-- Fix a bug where the QHelp preview page was not being refreshed after changes to the underlying `.qhelp` file.
+- Fix a bug where the QHelp preview page was not being refreshed after changes to the underlying `.qhelp` file. [#2660](https://github.com/github/vscode-codeql/pull/2660)
 
 ## 1.8.8 - 17 July 2023