docs: fix description

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

Author: kgryte

lib/node_modules/@stdlib/blas/ext/base/gcusumkbn/docs/types/index.d.ts

@@ -28,7 +28,7 @@ import { NumericArray, Collection, AccessorArrayLike } from '@stdlib/types/array
 type InputArray = NumericArray | Collection<number> | AccessorArrayLike<number>;
 
 /**
-* Input array.
+* Output array.
 */
 type OutputArray = NumericArray | Collection<number> | AccessorArrayLike<number>;