Update broken links to video intelligence docs in package README (#3458)

Author: endast

videointelligence/README.rst

@@ -33,8 +33,8 @@ API enables developers to
 understand the content of a video by encapsulating powerful machine
 learning models in an easy to use REST API.
 
-.. _Video Intelligence: https://cloud.google.com/videointelligence/
-.. _Video Intelligence API docs: https://cloud.google.com/videointelligence/reference/rest/
+.. _Video Intelligence: https://cloud.google.com/video-intelligence/
+.. _Video Intelligence API docs: https://cloud.google.com/video-intelligence/docs/reference/rest/
 
 .. |pypi| image:: https://img.shields.io/pypi/v/google-cloud-videointelligence.svg
    :target: https://pypi.org/project/google-cloud-videointelligence/