doc: update a link in v8.md

PR-URL: #22639
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Vse Mozhet Byt <vsemozhetbyt@gmail.com>
Reviewed-By: Сковорода Никита Андреевич <chalkerx@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>

doc/api/v8.md

@@ -417,4 +417,4 @@ A subclass of [`Deserializer`][] corresponding to the format written by
 [V8]: https://developers.google.com/v8/
 [`vm.Script`]: vm.html#vm_new_vm_script_code_options
 [here]: https://github.com/thlorenz/v8-flags/blob/master/flags-0.11.md
-[`GetHeapSpaceStatistics`]: https://v8docs.nodesource.com/node-8.9/d5/dda/classv8_1_1_isolate.html#ac673576f24fdc7a33378f8f57e1d13a4
+[`GetHeapSpaceStatistics`]: https://v8docs.nodesource.com/node-10.6/d5/dda/classv8_1_1_isolate.html#ac673576f24fdc7a33378f8f57e1d13a4