Fix comment as requested

Author: Blaisorblade

compiler/test/dotty/tools/vulpix/VulpixMetaTests.scala

@@ -16,7 +16,7 @@ class VulpixMetaTests extends ParallelTesting {
   def maxDuration = 1.seconds
   // Ensure maximum reproducibility.
   def numberOfSlaves = 1
-  def safeMode = false // Don't fork separate VMs
+  def safeMode = false // Don't fork a new VM after each run test
   def isInteractive = false // Don't beautify output for interactive use.
   def testFilter = None // Run all the tests.