Fix rust highlight query parser compatibility

Author: mehmetozguldev

extensions/rust/highlights.scm

@@ -8,7 +8,7 @@
 
 ; Assume all-caps names are constants
 ((identifier) @constant
- (#match? @constant "^[A-Z][A-Z\\d_]+$'"))
+ (#match? @constant "^[A-Z][A-Z\\d_]+$"))
 
 ; Assume uppercase names are enum constructors
 ((identifier) @constructor
@@ -70,8 +70,10 @@
 (line_comment) @comment
 (block_comment) @comment
 
-(line_comment (doc_comment)) @comment.documentation
-(block_comment (doc_comment)) @comment.documentation
+((line_comment) @comment.documentation
+ (#match? @comment.documentation "^///|^//!"))
+((block_comment) @comment.documentation
+ (#match? @comment.documentation "^/\\*\\*|^/\\*!"))
 
 "(" @punctuation.bracket
 ")" @punctuation.bracket