Update typo in coverageExcludeClasslikes doc

Co-authored-by: Guillaume Raffin <theelectronwill@gmail.com>

Author: KacperFKorban

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

@@ -127,7 +127,7 @@ trait CommonScalaSettings:
 
   /* Coverage settings */
   val coverageOutputDir = PathSetting("-coverage-out", "Destination for coverage classfiles and instrumentation data.", "", aliases = List("--coverage-out"))
-  val coverageExcludeClasslikes: Setting[List[String]] = MultiStringSetting("-coverage-exclude-classlikes", "packages, clesses and modules", "List of regexes for packages, classes and modules to exclude from coverage.", aliases = List("--coverage-exclude-classlikes"))
+  val coverageExcludeClasslikes: Setting[List[String]] = MultiStringSetting("-coverage-exclude-classlikes", "packages, classes and modules", "List of regexes for packages, classes and modules to exclude from coverage.", aliases = List("--coverage-exclude-classlikes"))
   val coverageExcludeFiles: Setting[List[String]] = MultiStringSetting("-coverage-exclude-files", "files", "List of regexes for files to exclude from coverage.", aliases = List("--coverage-exclude-files"))
 
   /* Other settings */