style: add blank line

Signed-off-by: Athan <[email protected]>

Author: kgryte

lib/node_modules/@stdlib/stats/base/ndarray/sstdev/docs/types/index.d.ts

@@ -46,6 +46,7 @@ import { float32ndarray, typedndarray } from '@stdlib/types/ndarray';
 */
 declare function sstdev<T extends typedndarray<number> = typedndarray<number>>( arrays: [ float32ndarray, T ] ): number;
 
+
 // EXPORTS //
 
 export = sstdev;