feat: show error highlighting on extra close tags

[DylanPiercey]

Description

Add error highlighting when an extraneous html closing tag is found

Checklist:

• [ ] I have updated/added documentation affected by my changes.
• [ ] I have added tests to cover my changes.

[changeset-bot[bot]]

🦋 Changeset detected

Latest commit: aa6495f95cc37d39c2ca07be28656fd8d83e68a7

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

| Name | Type | | ------------ | ----- | | marko-vscode | Patch |

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