Fix typos

Author: odersky

compiler/src/dotty/tools/dotc/ast/TreeInfo.scala

@@ -726,7 +726,7 @@ trait TypedTreeInfo extends TreeInfo[Type] { self: Trees.Instance[Type] =>
     case _ => tree
   }
 
-  /** An anonyous function and a closure node referring to it in a block, without any wrappigs */
+  /** An anonymous function and a closure node referring to it in a block, without any wrappings */
   object simpleClosure:
     def unapply(tree: Tree)(using Context): Option[(DefDef, Closure)] = tree match
       case Block((meth : DefDef) :: Nil, closure: Closure) if meth.symbol == closure.meth.symbol =>

compiler/src/dotty/tools/dotc/typer/Nullables.scala

@@ -505,7 +505,7 @@ object Nullables:
    *  that they are cbv, and we have to correct this assumption if the actual resolved
    *  method is cbn. If the call is non-overloaded, we do the right thing from the start.
    *  Inserting a byName call just makes clear that the argumnent is cbn. There is no
-   *  special treatemnt in the compiler associated with that method; it is just the
+   *  special treatment in the compiler associated with that method; it is just the
    *  cbn identity.
    */
   def postProcessByNameArgs(fn: TermRef, app: Tree)(using Context): Tree =