Update Cascader.tsx

Author: BoyYangzai

src/Cascader.tsx

@@ -97,7 +97,7 @@ export interface BaseCascaderProps<OptionType extends BaseOptionType = DefaultOp
   /** @deprecated Use `dropdownClassName` instead */
   popupClassName?: string;
   dropdownClassName?: string;
-  /** @deprecated Use `styles.dropdownMenuColumn` instead */
+  /** @deprecated Use `styles.popupMenuColumn` instead */
   dropdownMenuColumnStyle?: React.CSSProperties;
 
   // styles