Mark "value" field as ignored in boolean_on_off_literal

Author: nene

src/syntax/parameter.ts

@@ -22,6 +22,7 @@ export const parameterMap: CstToDocMap<AllParameterNodes> = {
   // SHOW
   show_parameter_stmt: (print) => print.spaced(["showKw", "name"]),
 
+  /** cst-ignore: value */
   boolean_on_off_literal: (print, node, path, options) =>
     printLiteral(node.valueKw, options),
 };