fix: undo suspicious change

Author: i10416

project/Build.scala

@@ -2370,7 +2370,7 @@ object ScaladocConfigs {
  .add(VersionsDictionaryUrl("https://scala-lang.org/api/versions.json"))
  .add(DocumentSyntheticTypes(true))
  .add(SnippetCompiler(List(
- s"${dottyLibRoot}/scala=compile",
+ s"${dottyLibRoot}/src/scala=compile",
  s"$dottyLibRoot/src/scala/compiletime=compile",
  s"$dottyLibRoot/src/scala/util=compile",
  s"$dottyLibRoot/src/scala/util/control=compile",