docs (talos hvm): add the Talos Hypervisor docs - #867

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v4, actions/setup-go@v5. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

code block has no language hint; add one (e.g. ```bash, ```json)

code block has no language hint; add one (e.g. ```bash, ```json)

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heading should be sentence case; lowercase "Hypervisor" (or add it to exceptions.txt if it's a proper noun)

link text "here" is not descriptive; say where the link goes

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code block has no language hint; add one (e.g. ```bash, ```json)

code block has no language hint; add one (e.g. ```bash, ```json)

code block has no language hint; add one (e.g. ```bash, ```json)

Restore cache failed: Dependencies file is not found in /home/runner/work/docs/docs. Supported file pattern: go.sum