Annotate arrays correctly

types/underscore/index.d.ts

@@ -560,7 +560,7 @@ declare module _ {
 
         pluck(
             list: _.List<any>,
-            propertyName: string): any;
+            propertyName: string): any[];
 
         /**
         * Returns the maximum value in list.

types/underscore/underscore-tests.ts

@@ -173,7 +173,7 @@ _.contains([1, 2, 3], 3, 1);
 _.invoke([[5, 1, 7], [3, 2, 1]], 'sort');
 
 // https://github.com/DefinitelyTyped/DefinitelyTyped/issues/33479
-var foo: any = {'a': 1, 'b': 2};
+var foo: any[] = [{'a': 1, 'b': 2}];
 _.pluck(foo, 'a');
 
 var stooges = [{ name: 'moe', age: 40 }, { name: 'larry', age: 50 }, { name: 'curly', age: 60 }];