Merge pull request #93 from typelevel/update/sbt-typelevel-0.6.2

Update sbt-typelevel, sbt-typelevel-site to 0.6.2

Author: TonioGela

project/plugins.sbt

@@ -1,3 +1,3 @@
-addSbtPlugin("org.typelevel" % "sbt-typelevel"      % "0.6.1")
-addSbtPlugin("org.typelevel" % "sbt-typelevel-site" % "0.6.1")
+addSbtPlugin("org.typelevel" % "sbt-typelevel"      % "0.6.2")
+addSbtPlugin("org.typelevel" % "sbt-typelevel-site" % "0.6.2")
 addSbtPlugin("org.scala-js"  % "sbt-scalajs"        % "1.14.0")