fix: update import path for Collection type definition

Ref: bde4671

Author: kgryte

lib/node_modules/@stdlib/utils/append/docs/types/index.d.ts

@@ -20,7 +20,7 @@
 
 /// <reference types="@stdlib/types"/>
 
-import { Collection } from '@stdlib/types/object';
+import { Collection } from '@stdlib/types/array';
 
 /**
 * Adds elements from one collection to the end of another collection.
@@ -44,7 +44,7 @@ import { Collection } from '@stdlib/types/object';
 * arr = append( arr, [ 6.0, 7.0 ] );
 * // returns <Float64Array>[ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0 ]
 */
-declare function append( collection1: Collection, collection2: Collection ): Collection; // tslint-disable-line max-line-length
+declare function append<T = unknown, U = unknown>( collection1: Collection<T>, collection2: Collection<U> ): Collection<T | U>;
 
 
 // EXPORTS //

lib/node_modules/@stdlib/utils/append/docs/types/test.ts

@@ -23,10 +23,10 @@ import append = require( './index' );
 
 // The function returns a collection...
 {
-	append( [ 0, 0 ], [ 1, 1 ] ); // $ExpectType Collection
-	append( [ false, true ], [ 0, 1 ] ); // $ExpectType Collection
-	append( [ 'abc', 'abc' ], [ 0, 1 ] ); // $ExpectType Collection
-	append( [ true, true ], [ false, false ] ); // $ExpectType Collection
+	append( [ 0, 0 ], [ 1, 1 ] ); // $ExpectType Collection<number>
+	append( [ false, true ], [ 0, 1 ] ); // $ExpectType Collection<number | boolean>
+	append( [ 'abc', 'abc' ], [ 0, 1 ] ); // $ExpectType Collection<string | number>
+	append( [ true, true ], [ false, false ] ); // $ExpectType Collection<boolean>
 }
 
 // The compiler throws an error if the function is provided a first argument which is not a collection...