Update Vue.js topic

[rcalixte]

Please confirm this pull request meets the following requirements:

• I followed the contributing guidelines: https://github.com/github/explore/blob/main/CONTRIBUTING.md.
• I am not the sole author or employee of a company who created either the topic I am modifying/adding or the collection entry I am modifying/adding.

Which change are you proposing?

• Suggesting edits to an existing topic or collection

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Editing an existing topic or collection

I'm suggesting these edits to an existing topic or collection:

• Content (and my changes are in index.md)

This is an update for Vue.js. Version 2 (at the old repository address) is end of life. Version 3 was created with a new repository.

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Please note: we will close your PR without comment if you do not check the boxes above and provide ALL requested information.

[ahpook]

Thanks @rcalixte !