[x/blog] content/vscode-go: add redirect from long form URL
[x/blog] content/vscode-go: add redirect from long form URL

The canonical path for this blog post is the short path /vscode-go,
determined from the file name. This change adds a secondary longer
path that redirects to the canonical short one, so that both links
can work at the time the blog post is published.

Change-Id: I8f0edf44536d22ef2fd8693aa5c6e82947a8c7a6
Reviewed-on: https://go-review.googlesource.com/c/blog/+/237165
Reviewed-by: Rebecca Stambler <d7cf11e5f299d88ea8348366a9fc4f7c335c3afa@golang.org>
X-Blog-Commit: 6d8d6d21bfd27e8a05fe6970a1d23fa47e8b7577

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