Update Remote-Containers command name to "Clone Repository in Container Volume"

Update .devcontainer/README.md

Author: turara

.devcontainer/README.md

@@ -18,9 +18,9 @@ This repository includes configuration for a development container for working w
 
     > Note that the Remote - Containers extension requires the Visual Studio Code distribution of Code - OSS. See the [FAQ](https://aka.ms/vscode-remote/faq/license) for details.
 
-4. Press <kbd>Ctrl/Cmd</kbd> + <kbd>Shift</kbd> + <kbd>P</kbd> and select **Remote - Containers: Open Repository in Container...**.
+4. Press <kbd>Ctrl/Cmd</kbd> + <kbd>Shift</kbd> + <kbd>P</kbd> and select **Remote-Containers: Clone Repository in Container Volume...**.
 
-    > **Tip:** While you can use your local source tree instead, operations like `yarn install` can be slow on macOS or using the Hyper-V engine on Windows. We recommend the "open repository" approach instead since it uses "named volume" rather than the local filesystem.
+    > **Tip:** While you can use your local source tree instead, operations like `yarn install` can be slow on macOS or using the Hyper-V engine on Windows. We recommend the "clone repository in container" approach instead since it uses "named volume" rather than the local filesystem.
 
 5. Type `https://github.com/microsoft/vscode` (or a branch or PR URL) in the input box and press <kbd>Enter</kbd>.