Minor fix in cairo-101/arrays

Author: CountryCousin

modules/archive/pages/cairo-101/arrays.adoc

@@ -2,7 +2,7 @@
 
 An array is a growable collection of objects of the same type, stored in contiguous memory.
 
-An empty array of type `T` can be initialized using `ArrayTrait::<u128>::new()`. The `array!` macro can be used create arrays with values that are already known at compile time.
+An empty array of type `T` can be initialized using `ArrayTrait::<T>::new()`. The `array!` macro can be used create arrays with values that are already known at compile time.
 
 Elements in an array can be accessed using the `at()` method and `arr[index]` subscripting operator.