update vk urls, due to invalidation of api.vkontakte.ru in favor of api.vk.com
update vk urls, due to invalidation of api.vkontakte.ru in favor of api.vk.com

Signed-off-by: Ivan Kolomiets <9d61b17b96cf7c7611b1e3f30bace43b5d06206f@yandex.ru>

klen/aioauth-client