Rename type and add doc.

src/components/Dashboard/ReservationPage/Reservation/SeniorSearch/SeniorSearch.tsx

@@ -6,15 +6,17 @@ import { getSeniorListByLastName } from 'api/getSeniorListByLastName';
 import { SeniorSearchQueryType } from 'types/SeniorSearchQueryType';
 import { getSeniorListByCard } from 'api/getSeniorListByCard';
 
-type SeniorSearchProps = {
+type PropType = {
   senior: SeniorSearchQueryType | null;
   setSenior: React.Dispatch<React.SetStateAction<SeniorSearchQueryType | null>>;
 };
 
-export const SeniorSearch: FC<SeniorSearchProps> = ({
-  senior,
-  setSenior,
-}: SeniorSearchProps) => {
+/**
+ * Search a senior by member card or by last name.
+ * @param {PropType} react action data for connecting this component.
+ * @returns
+ */
+export const SeniorSearch: FC<PropType> = ({ senior, setSenior }: PropType) => {
   const [seniors, setSeniors] = useState<SeniorSearchQueryType[]>([]);
   const [query, setQuery] = useState<string | number>('');