Explain the _create an admin step_ of the tutorial (#9371)

Co-authored-by: Thibaud Colas <thibaudcolas@gmail.com>

CONTRIBUTORS.rst

@@ -648,6 +648,7 @@ Contributors
 * Bolarinwa Comfort Ajayi
 * Mary Ojo
 * Oluwaloseyi Adeleye
+* Dennis Onyeka
 
 Translators
 ===========

docs/getting_started/tutorial.md

@@ -111,7 +111,7 @@ This command ensures that the tables in your database are matched to the models
 python manage.py createsuperuser
 ```
 
-When logged into the admin site, a superuser has full permissions and is able to view/create/manage the database.
+This will prompt you to create a new superuser account with full permissions. Note the password text won’t be visible when typed, for security reasons.
 
 ### Start the server