docs: roll back to collection generic type

Author: DivitJain26

lib/node_modules/@stdlib/array/base/banded/to-compact/docs/types/index.d.ts

@@ -20,10 +20,12 @@
 
 /// <reference types="@stdlib/types"/>
 
+import { Collection } from '@stdlib/types/array';
+
 /**
 * Two-dimensional nested array.
 */
-type Array2D<T> = Array<Array<T>>;
+type Array2D<T> = Array<Collection<T>>;
 
 /**
 * Converts a two-dimensional banded nested array to compact banded storage.
@@ -54,7 +56,7 @@ type Array2D<T> = Array<Array<T>>;
 * var out = toCompact( M, 1, 1, true );
 * // returns [ [ 0, 11, 2 ], [ 3, 12, 4 ], [ 5, 13, 0 ] ]
 */
-declare function toCompact<T>( arr: Array2D<T>, ku: number, kl: number, colexicographic: boolean ): Array2D<T>;
+declare function toCompact<T = unknown>( arr: Array2D<T>, ku: number, kl: number, colexicographic: boolean ): Array2D<T>;
 
 
 // EXPORTS //