Invalid partition return type in chain

Chain is an array of T. Partition should return _Chain<T[]>.

underscore/underscore.d.ts

@@ -2833,7 +2833,7 @@ interface _Chain<T> {
 	* Wrapped type `any[]`.
 	* @see _.partition
 	**/
-	partition(iterator: _.ListIterator<T, boolean>, context?: any): _Chain<T[][]>;
+	partition(iterator: _.ListIterator<T, boolean>, context?: any): _Chain<T[]>;
 
 	/**
 	* Wrapped type `any[][]`.