docs: fixed typo in vscode.md

[oumarbarry]

No description provided.

[google-cla]

Thanks for your pull request! It looks like this may be your first contribution to a Google open source project. Before we can look at your pull request, you'll need to sign a Contributor License Agreement (CLA).

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[parlough]

Thanks for the PR fixing this!

However, before we can review and accept your change,
you'll have to sign the CLA as outlined in the earlier comment.

Let us know if you have any issues with the CLA. Thanks again!