Setting up missing redirect.

Author: Oxyjun

public/_redirects

@@ -427,6 +427,7 @@
 /durable-objects/changelog/ /durable-objects/release-notes/ 301
 /durable-objects/glossary/ /durable-objects/reference/glossary/ 301
 /durable-objects/get-started/walkthrough/ /durable-objects/get-started/ 301
+/durable-objects/get-started/tutorial/ /durable-objects/get-started/ 301
 /durable-objects/get-started/tutorial-with-sql-api/ /durable-objects/get-started/ 301
 /durable-objects/get-started/video-series/intro/ /durable-objects/video-tutorials/ 301
 /durable-objects/get-started/video-series/app-frontend/ /durable-objects/video-tutorials/ 301