feat: update math/base/special TypeScript declarations

PR-URL: #9117

Reviewed-by: Philipp Burckhardt <pburckhardt@outlook.com>
Signed-off-by: stdlib-bot <82920195+stdlib-bot@users.noreply.github.com>

Author: stdlib-bot

lib/node_modules/@stdlib/math/base/special/docs/types/index.d.ts

@@ -3835,17 +3835,9 @@ interface Namespace {
 	*
 	* @example
 	* var Complex64 = require( '@stdlib/complex/float32/ctor' );
-	* var real = require( '@stdlib/complex/float32/real' );
-	* var imag = require( '@stdlib/complex/float32/imag' );
 	*
 	* var v = ns.csignumf( new Complex64( -4.2, 5.5 ) );
-	* // returns <Complex64>
-	*
-	* var re = real( v );
-	* // returns ~-0.607
-	*
-	* var im = imag( v );
-	* // returns ~0.795
+	* // returns <Complex64>[ ~-0.607, ~0.795 ]
 	*/
 	csignumf: typeof csignumf;