style($injector): add a comment to explain the distinction with isArray

Author: robinboehm

src/auto/injector.js

@@ -584,6 +584,8 @@ function createInjector(modulesToLoad) {
       var Constructor = function() {},
           instance, returnedValue;
 
+      // Check if Type is annotated and use just the given function at n-1 as parameter
+      // e.g. someModule.factory('greeter', ['$window', function(renamed$window) {}]);
       Constructor.prototype = (isArray(Type) ? Type[Type.length - 1] : Type).prototype;
       instance = new Constructor();
       returnedValue = invoke(Type, instance, locals);