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Description
Vue version
3.5.13
Link to minimal reproduction
https://vuejs.org/guide/built-ins/transition-group
Steps to reproduce
The error is visible, if the docs-page for TransitionGroups (https://vuejs.org/guide/built-ins/transition-group) is put through the W3C validator:
Attribute name not allowed on element [ul](https://html.spec.whatwg.org/multipage/#the-ul-element) at this point
What is expected?
Valid HTML
What is actually happening?
Invalid HTML
System Info
Any additional comments?
No response