Update compiler/src/dotty/tools/dotc/cc/CheckCaptures.scala

Co-authored-by: Oliver Bračevac <[email protected]>

Author: odersky

compiler/src/dotty/tools/dotc/cc/CheckCaptures.scala

@@ -2144,7 +2144,7 @@ class CheckCaptures extends Recheck, SymTransformer:
      *  A parent class constructor is _read-only_ if the following conditions are met
      *   1. The class does not retain any exclusive capabilities from its environment.
      *   2. The constructor does not take arguments that retain exclusive capabilities.
-     *   3. The class does not does not have fields that retain exclusive universal capabilities.
+     *   3. The class does not have fields that retain exclusive universal capabilities.
      */
     def checkMutableInheritance(cls: ClassSymbol, parents: List[Tree])(using Context): Unit =
       if cls.derivesFrom(defn.Caps_Mutable) then