Update CHANGELOG.md (#3084)

Updated documentation link. Original was not working.

Author: coadaflorin

extensions/ql-vscode/CHANGELOG.md

@@ -49,7 +49,7 @@ No user facing changes.
 
 ## 1.9.0 - 19 September 2023
 
-- Release the [CodeQL model editor](https://codeql.github.com/docs/codeql/codeql-for-visual-studio-code/using-the-codeql-model-editor) to create CodeQL model packs for Java frameworks. Open the editor using the "CodeQL: Open CodeQL Model Editor (Beta)" command. [#2823](https://github.com/github/vscode-codeql/pull/2823)
+- Release the [CodeQL model editor](https://codeql.github.com/docs/codeql-for-visual-studio-code/using-the-codeql-model-editor/) to create CodeQL model packs for Java frameworks. Open the editor using the "CodeQL: Open CodeQL Model Editor (Beta)" command. [#2823](https://github.com/github/vscode-codeql/pull/2823)
 
 ## 1.8.12 - 11 September 2023