docs: improve doctests for complex number instances in array/base/at

Author: aryan7071

lib/node_modules/@stdlib/array/base/at/docs/types/index.d.ts

@@ -32,25 +32,19 @@ import { Collection, AccessorArrayLike, Complex128Array, Complex64Array } from '
 *
 * @example
 * var Complex128Array = require( '@stdlib/array/complex128' );
-* var real = require( '@stdlib/complex/float64/real' );
-* var imag = require( '@stdlib/complex/float64/imag' );
+* 
 *
 * var x = new Complex128Array( [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0 ] );
 *
 * var v = at( x, 0 );
-* // returns <Complex128>
+* // returns <Complex128>[ 1.0, 2.0 ]
 *
 * v = at( x, 1 );
-* // returns <Complex128>
+* // returns <Complex128>[ 3.0, 4.0 ]
 *
 * v = at( x, -2 );
-* // returns <Complex128>
-*
-* var re = real( v );
-* // returns 5.0
+* // returns <Complex128>[ 5.0, 6.0 ]
 *
-* var im = imag( v );
-* // returns 6.0
 */
 declare function at( x: Complex128Array, index: number ): Complex128 | void;