docs: update utils TypeScript declarations

PR-URL: #8883
Reviewed-by: Athan Reines <kgryte@gmail.com>

Author: stdlib-bot

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

@@ -2156,7 +2156,7 @@ interface Namespace {
 	* var obj = {'a':{'b':{'c':'d'}}};
 	*
 	* var out = flatten( obj );
-	* // returns {'a|b':{'c':'d'}}
+	* // returns {'a|b|c':'d'}
 	*/
 	flattenObject: typeof flattenObject;
 
@@ -3256,23 +3256,30 @@ interface Namespace {
 	* @returns function wrapper
 	*
 	* @example
-	* function foo( a, b, c ) {
-	*     return [ a, b, c ];
-	* }
-	*
 	* function clbk( v ) {
-	*     this.count += 1;
 	*     return v * 2;
 	* }
 	*
-	* var thisArg = { 'count': 0 };
-	* var bar = ns.mapArguments( foo, clbk, thisArg );
+	* function Foo() {
+	*     this.x = 1;
+	*     this.y = 2;
+	* }
 	*
-	* var out = bar( 1, 2, 3 );
-	* // returns [ 2, 4, 6 ]
+	* Foo.prototype.scale = function scale( a, b ) {
+	*     return [ this.x*a, this.y*b ];
+	* };
 	*
-	* var count = thisArg.count;
-	* // returns 3
+	* var ctx = {
+	*     'x': 10,
+	*     'y': 20
+	* };
+	*
+	* var foo = new Foo();
+	*
+	* var bar = ns.mapArguments( foo.scale, clbk, ctx );
+	*
+	* var out = bar( 1, 2 );
+	* // returns [ 20, 80 ]
 	*/
 	mapArguments: typeof mapArguments;