Fix missing article

Author: kgryte

lib/node_modules/@stdlib/proxy/ctor/test/test.js

@@ -33,7 +33,7 @@ tape( 'main export is a function', function test( t ) {
 	t.end();
 });
 
-tape( 'if an environment supports ES6/ES2015+ `Proxy`, the main export is `Proxy` function', function test( t ) {
+tape( 'if an environment supports ES6/ES2015+ `Proxy`, the main export is the `Proxy` global', function test( t ) {
 	var Proxy;
 	var mock;