message: Clarify label in the presence of details
diff: @@ -2020,6 +2020,9 @@ export interface CompletionItem {
  *
  * The label property is also by default the text that
  * is inserted when selecting this completion.
  + *
  + * If label details are provided the label itself should
  + * be an unqualified name of the completion item.
  */
  label: string;
  