docs: fix example

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---

Author: kgryte

lib/node_modules/@stdlib/ndarray/base/nullary/lib/7d_blocked_accessors.js

@@ -45,8 +45,8 @@ var blockSize = require( '@stdlib/ndarray/base/nullary-tiling-block-size' );
 * @example
 * var Complex64Array = require( '@stdlib/array/complex64' );
 * var Complex64 = require( '@stdlib/complex/float32/ctor' );
-* var real = require( '@stdlib/complex/float64/real' );
-* var imag = require( '@stdlib/complex/float64/imag' );
+* var realf = require( '@stdlib/complex/float32/real' );
+* var imagf = require( '@stdlib/complex/float32/imag' );
 *
 * function fcn() {
 *     return new Complex64( 10.0, -10.0 );
@@ -89,10 +89,10 @@ var blockSize = require( '@stdlib/ndarray/base/nullary-tiling-block-size' );
 *
 * var v = x.data.get( 0 );
 *
-* var re = real( v );
+* var re = realf( v );
 * // returns 10.0
 *
-* var im = imag( v );
+* var im = imagf( v );
 * // returns -10.0
 */
 function blockednullary7d( x, fcn ) { // eslint-disable-line max-statements