Add tmlanguage schema to textmate language files + fix the errors hop…

[jasikpark]

…efully.

This might

Changes

• Updates the tmLanguage file with a $schema + fixing the problems from [BUG] Grammar source contains incompatible syntax #925
• I didn't include a changeset because it seems the the folder I touched is not w/in scope of the changeset setup...

Testing

Docs

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⚠️ No Changeset found

Latest commit: dd47020

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

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[iksaku]

Woa, faster than a bullet! You beat me to it ⚡

[jasikpark]

I don't know how to test my changes, though there is the validation added by the $schema, so that helps!

[matthewp]

Lgtm