Update sbt-dotty/src/dotty/tools/sbtplugin/DottyPlugin.scala

Co-authored-by: Guillaume Martres <[email protected]>

Author: abgruszecki

sbt-dotty/src/dotty/tools/sbtplugin/DottyPlugin.scala

@@ -362,7 +362,7 @@ object DottyPlugin extends AutoPlugin {
 
       // Configuration for the doctool
       resolvers ++= (if(!useScala3doc.value) Nil else Seq(Resolver.jcenterRepo)),
-      useScala3doc := true,
+      useScala3doc := VersionNumber(scalaVersion.value).matchesSemVer(SemanticSelector(">=3.0.0-M3")),
       // We need to add doctool classes to the classpath so they can be called
       scalaInstance in doc := Def.taskDyn {
         if (isDotty.value)