Fix list style

We may want to disable this rule, but the change is worthwhile
here for consistency

Author: sampart

README.md

@@ -25,8 +25,8 @@ This project will track new feature development in CodeQL and, whenever appropri
 
 This extension depends on the following two extensions for required functionality. They will be installed automatically when you install VS Code CodeQL.
 
-- [Test Adapter Converter](https://marketplace.visualstudio.com/items?itemName=ms-vscode.test-adapter-converter)
-- [Test Explorer UI](https://marketplace.visualstudio.com/items?itemName=hbenl.vscode-test-explorer)
+* [Test Adapter Converter](https://marketplace.visualstudio.com/items?itemName=ms-vscode.test-adapter-converter)
+* [Test Explorer UI](https://marketplace.visualstudio.com/items?itemName=hbenl.vscode-test-explorer)
 
 ## Contributing