Negate description of negated option

Author: Blaisorblade

compiler/src/dotty/tools/dotc/config/ScalaSettings.scala

@@ -146,7 +146,7 @@ class ScalaSettings extends Settings.SettingGroup {
   val Xlink = BooleanSetting("-Xlink", "Recompile library code with the application.")
   val YoptPhases = PhasesSetting("-Yopt-phases", "Restrict the optimisation phases to execute under -optimise.")
   val YoptFuel = IntSetting("-Yopt-fuel", "Maximum number of optimisations performed under -optimise.", -1)
-  val YnoDecodeStacktraces = BooleanSetting("-Yno-decode-stacktraces", "Show operations that triggered StackOverflows instead of printing the raw stacktraces.")
+  val YnoDecodeStacktraces = BooleanSetting("-Yno-decode-stacktraces", "Show raw StackOverflow stacktraces, instead of decoding them into triggering operations.")
 
   /** Dottydoc specific settings */
   val siteRoot = StringSetting(