[createglobalstate] demo is invalid

[HelenSilas]

Describe the bug

https://vueuse.org/shared/createGlobalState/

A bigger example of createglobalstate is invalid

Reproduction

https://vueuse.org/shared/createGlobalState/

System Info

https://vueuse.org/shared/createGlobalState/

Used Package Manager

npm

Validations

• Follow our Code of Conduct
• Read the Contributing Guidelines.
• Read the docs.
• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.
• Make sure this is a VueUse issue and not a framework-specific issue. For example, if it's a Vue SFC related bug, it should likely be reported to https://github.com/vuejs/core instead.
• Check that this is a concrete bug. For Q&A open a GitHub Discussion.
• The provided reproduction is a minimal reproducible example of the bug.