Fix docs

Author: nicolasstucki

compiler/src/dotty/tools/dotc/transform/PickleQuotes.scala

@@ -59,9 +59,9 @@ import scala.annotation.constructorOnly
  *       ]],
  *       typeHole = Seq(a, b),
  *       termHole = (idx: Int, args: List[Any], quotes: Quotes) => idx match {
- *         case 3 => content0.apply(args(0).asInstanceOf[Expr[U1]]).apply(quotes) // beta reduced
- *         case 4 => content1.apply(args(0).asInstanceOf[Expr[U2]]).apply(quotes) // beta reduced
- *         case 5 => content2.apply(args(0).asInstanceOf[Expr[U1]], args(1).asInstanceOf[Expr[U2]]).apply(quotes) // beta reduced
+ *         case 3 => holeContents0.apply(args(0).asInstanceOf[Expr[U1]]).apply(quotes) // beta reduced
+ *         case 4 => holeContents1.apply(args(0).asInstanceOf[Expr[U2]]).apply(quotes) // beta reduced
+ *         case 5 => holeContents2.apply(args(0).asInstanceOf[Expr[U1]], args(1).asInstanceOf[Expr[U2]]).apply(quotes) // beta reduced
  *       },
  *     )
  *    ```