Tell user to say no when asked to enable WebAuth

docs/docs/tutorial/chapter4/authentication.md

@@ -131,7 +131,7 @@ Run this setup command to get the internals of dbAuth added to our app:
 yarn rw setup auth dbAuth
 ```
 
-When asked if you want to override the existing file `/api/src/lib/auth.{js,ts}` say yes. The shell `auth.{js,ts}` that's created in a new app makes sure things like the `@requireAuth` directive work, but now we'll replace it with a real implementation.
+When asked if you want to override the existing file `/api/src/lib/auth.{js,ts}` say yes. The shell `auth.{js,ts}` that's created in a new app makes sure things like the `@requireAuth` directive work, but now we'll replace it with a real implementation. Say no when asked to Enable WebAuthn support.
 
 You'll see that the process creates several files and includes some post-install instructions for the last couple of customizations you'll need to make. Let's go through them now.
 
@@ -474,7 +474,7 @@ Yet another generator is here for you, this time one that will create pages for
 yarn rw g dbAuth
 ```
 
-Again several pages will be created and some post-install instructions will describe next steps. But for now, try going to [http://localhost:8910/login](http://localhost:8910/login):
+Say no when asked to Enable WebAuthn support. Again several pages will be created and some post-install instructions will describe next steps. But for now, try going to [http://localhost:8910/login](http://localhost:8910/login):
 
 ![Generated login page](https://user-images.githubusercontent.com/300/146464693-a8fc4cf9-7fed-474f-8335-bb4c80fe0a5e.png)