Fix clean command

Co-authored-by: Guillaume Martres <smarter@ubuntu.com>

Author: anatoliykmetyuk

project/Build.scala

@@ -1332,7 +1332,7 @@ object Build {
       nonBootstrappedSettings(
         addCommandAlias("run", "scala3-compiler/run"),
         // Clean everything by default
-        addCommandAlias("clean", ";dotty/clean;scala3-bootstrapped/clean"),
+        addCommandAlias("clean", ";scala3/clean;scala3-bootstrapped/clean"),
         // `publishLocal` on the non-bootstrapped compiler does not produce a
         // working distribution (it can't in general, since there's no guarantee
         // that the non-bootstrapped library is compatible with the