spelling: visited

Signed-off-by: Josh Soref <[email protected]>

Author: jsoref

include/swift/IDE/CodeCompletionResultType.h

@@ -227,7 +227,7 @@ class USRBasedType {
       : USR(USR), Supertypes(Supertypes),
         CustomAttributeKinds(CustomAttributeKinds) {}
 
-  /// Implementation of \c typeRelation. \p VisistedTypes keeps track which
+  /// Implementation of \c typeRelation. \p VisitedTypes keeps track which
   /// types have already been visited.
   CodeCompletionResultTypeRelation
   typeRelationImpl(const USRBasedType *ResultType, const USRBasedType *VoidType,