Update tutorial.md (#11622)

Removes mention of an error that don't occur, the template was created.

CONTRIBUTORS.md

@@ -796,6 +796,7 @@
 * Advik Kabra
 * Ankur Raiyani
 * Hossein
+* Andre Delorme
 
 ## Translators
 

docs/getting_started/tutorial.md

@@ -346,7 +346,7 @@ Now that this is complete, here is how you can create a page from the Wagtail [a
 4.  Choose **Blog index page** from the list of the page types.
 5.  Use "Our Blog" as your page title, make sure it has the slug "blog" on the Promote tab, and publish it.
 
-You can now access the URL, <http://127.0.0.1:8000/blog> on your site. This gives you an error page showing "TemplateDoesNotExist" because you are yet to create a template for the new page. Also, note how the slug from the Promote tab defines the page URL.
+You can now access the URL, <http://127.0.0.1:8000/blog> on your site. Note how the slug from the Promote tab defines the page URL.
 
 Now create a model and template for your blog posts. Edit `blog/models.py` to include: