html: Use @attribute highlight capture for HTML attributes (#20752)

`@attribute` is the very first query on the
https://zed.dev/docs/extensions/languages#syntax-highlighting captures
list, we should be using it! This PR changes the highlights queries for
HTML to use the `@attribute` capture instead of the `@property` capture
for `attribute_name` nodes.

Release Notes:

- N/A

Co-authored-by: Marshall Bowers <elliott.codes@gmail.com>

extensions/html/languages/html/highlights.scm

@@ -1,7 +1,7 @@
 (tag_name) @tag
 (erroneous_end_tag_name) @keyword
 (doctype) @tag.doctype
-(attribute_name) @property
+(attribute_name) @attribute
 (attribute_value) @string
 (comment) @comment