Merge pull request #1351 from konradsz/number_slices_guide

Import correct functions

Author: alexcrichton

examples/guide-supported-types-examples/number_slices.js

@@ -1,8 +1,6 @@
 import {
-  take_number_slice_by_value,
-  return_number_slice,
-  take_option_number_slice,
-  return_option_number_slice,
+  take_number_slice_by_shared_ref,
+  take_number_slice_by_exclusive_ref,
 } from './guide_supported_types_examples';
 
 take_number_slice_by_shared_ref(new Float64Array(100));