Fix comment string

Author: hdoc

clang/include/clang/AST/CommentParser.h

@@ -100,7 +100,7 @@ class Parser {
   ArrayRef<Comment::Argument>
   parseCommandArgs(TextTokenRetokenizer &Retokenizer, unsigned NumArgs);
 
-  /// Parse arguments for \\throws command supported args are in form of class
+  /// Parse arguments for \throws command supported args are in form of class
   /// or template.
   ArrayRef<Comment::Argument>
   parseThrowCommandArgs(TextTokenRetokenizer &Retokenizer, unsigned NumArgs);