README: Clarify Open/Open Folder command

Author: adityasharad

README.md

@@ -21,7 +21,7 @@
     ```
     git submodule update --init --remote
     ```
-- Open the repository in Visual Studio Code: **File** > **Open Folder** > Browse to the checkout of `githubuniverseworkshops/codeql`.
+- Open the repository in Visual Studio Code: **File** > **Open** (or **Open Folder**) > Browse to the checkout of `githubuniverseworkshops/codeql`.
 - Import the [CodeQL database](https://github.com/githubuniverseworkshops/codeql/releases/download/universe-2020/codeql-cpp-workshop-uaf.zip) to be used in the workshop:
   - Click the **CodeQL** rectangular icon in the left sidebar.
   - Place your mouse over **Databases**, and click the icon labelled `Download Database`.