comment(highlights): reduce false positives (#4298)

There are a couple cases where the comment highlights
will match things that aren't necessary a tag.
For example in Rust, when commenting a block that deals with
generics (generics are declared as `T: Type`),
this may be distracting.

So, instead of highlighting all tags, we can restrict
to highlighting the explicit keywords.

Ref https://github.com/stsewd/tree-sitter-comment/issues/14

queries/comment/highlights.scm

@@ -1,36 +1,37 @@
 (_) @spell
 
-[
- "("
- ")"
-] @punctuation.bracket
-
-":" @punctuation.delimiter
-
-(tag
+((tag
   (name) @text.todo
-  (user)? @constant)
-
-((tag ((name) @text.todo))
- (#eq? @text.todo "TODO"))
+  ("(" @punctuation.bracket (user) @constant ")" @punctuation.bracket)?
+  ":" @punctuation.delimiter)
+  (#eq? @text.todo "TODO"))
 
 ("text" @text.todo
  (#eq? @text.todo "TODO"))
 
-((tag ((name) @text.note))
- (#any-of? @text.note "NOTE" "XXX"))
+((tag
+  (name) @text.note
+  ("(" @punctuation.bracket (user) @constant ")" @punctuation.bracket)?
+  ":" @punctuation.delimiter)
+  (#any-of? @text.note "NOTE" "XXX"))
 
 ("text" @text.note
  (#any-of? @text.note "NOTE" "XXX"))
 
-((tag ((name) @text.warning))
- (#any-of? @text.warning "HACK" "WARNING"))
+((tag
+  (name) @text.warning
+  ("(" @punctuation.bracket (user) @constant ")" @punctuation.bracket)?
+  ":" @punctuation.delimiter)
+  (#any-of? @text.warning "HACK" "WARNING"))
 
 ("text" @text.warning
  (#any-of? @text.warning "HACK" "WARNING"))
 
-((tag ((name) @text.danger))
- (#any-of? @text.danger "FIXME" "BUG"))
+((tag
+  (name) @text.danger
+  ("(" @punctuation.bracket (user) @constant ")" @punctuation.bracket)?
+  ":" @punctuation.delimiter)
+  (#any-of? @text.danger "FIXME" "BUG"))
 
 ("text" @text.danger
  (#any-of? @text.danger "FIXME" "BUG"))