Fix typo in Array code example

doc/classes/Array.xml

@@ -243,7 +243,7 @@
 				var numbers = [1, 2, 3]
 				var extra = [4, 5, 6]
 				numbers.append_array(extra)
-				print(nums) # Prints [1, 2, 3, 4, 5, 6]
+				print(numbers) # Prints [1, 2, 3, 4, 5, 6]
 				[/codeblock]
 			</description>
 		</method>