docs: use v11 deployments for previews in react tutorial (#3426)

src/pages/developing/react-tutorial/overview.mdx

@@ -34,13 +34,13 @@ components, while introducing web development best practices along the way.
 
 </AnchorLinks>
 
-Here's a [preview](https://react-step-6--carbon-tutorial.netlify.com) of what
-you will build:
+Here's a [preview](https://v11-react-step-5--carbon-tutorial.netlify.app) of
+what you will build:
 
 <Preview
   height="400"
   title="Carbon Tutorial"
-  src="https://react-step-6--carbon-tutorial.netlify.com"
+  src="https://v11-react-step-5--carbon-tutorial.netlify.app"
   frameborder="no"
   allowtransparency="true"
   allowfullscreen="true"

src/pages/developing/react-tutorial/step-1.mdx

@@ -41,13 +41,13 @@ navigate between pages.
 
 ## Preview
 
-A [preview](https://v11-react-step-2--carbon-tutorial.netlify.com) of what you
+A [preview](https://v11-react-step-2--carbon-tutorial.netlify.app) of what you
 will build:
 
 <Preview
   height="200"
   title="Carbon Tutorial Step 1"
-  src="https://v11-react-step-2--carbon-tutorial.netlify.com"
+  src="https://v11-react-step-2--carbon-tutorial.netlify.app"
   frameborder="no"
   allowtransparency="true"
   allowfullscreen="true"

src/pages/developing/react-tutorial/step-2.mdx

@@ -41,13 +41,13 @@ Carbon components.
 
 ## Preview
 
-A [preview](https://react-step-3--carbon-tutorial.netlify.com) of what you'll
-build:
+A [preview](https://v11-react-step-3--carbon-tutorial.netlify.app) of what
+you'll build:
 
 <Preview
   height="400"
   title="Carbon Tutorial Step 2"
-  src="https://v11-react-step-3--carbon-tutorial.netlify.com"
+  src="https://v11-react-step-3--carbon-tutorial.netlify.app"
   frameborder="no"
   allowtransparency="true"
   allowfullscreen="true"

src/pages/developing/react-tutorial/step-3.mdx

@@ -48,13 +48,13 @@ To do so, we'll be using
 [Octokit Core](https://github.com/octokit/core.js/#readme), a client that makes
 it easy to interact with Github's APIs.
 
-A [preview](https://react-step-4--carbon-tutorial.netlify.com) of what you will
-build (see repositories page):
+A [preview](https://v11-react-step-4--carbon-tutorial.netlify.app) of what you
+will build (see repositories page):
 
 <Preview
   height="400"
   title="Carbon Tutorial Step 3"
-  src="https://react-step-4--carbon-tutorial.netlify.com"
+  src="https://v11-react-step-4--carbon-tutorial.netlify.app"
   frameborder="no"
   allowtransparency="true"
   allowfullscreen="true"

src/pages/developing/react-tutorial/step-4.mdx

@@ -49,13 +49,13 @@ Next, we're going to use Carbon assets to build application-specific components.
 We'll do so by including accessibility and responsive considerations all
 throughout.
 
-A [preview](https://react-step-5--carbon-tutorial.netlify.com) of what you'll
-build (see bottom of page):
+A [preview](https://v11-react-step-5--carbon-tutorial.netlify.app) of what
+you'll build (see bottom of page):
 
 <Preview
   height="400"
   title="Carbon Tutorial Step 4"
-  src="https://react-step-5--carbon-tutorial.netlify.com"
+  src="https://v11-react-step-5--carbon-tutorial.netlify.app"
   frameborder="no"
   allowtransparency="true"
   allowfullscreen="true"

src/pages/developing/react-tutorial/step-5.mdx

@@ -43,13 +43,13 @@ have not been updated to reflect changes for our next major version.
 
 ## Preview
 
-A [preview](https://react-step-6--carbon-tutorial.netlify.com) of what you'll
-build (visually no different, but built for production):
+A [preview](https://v11-react-step-5--carbon-tutorial.netlify.app) of what
+you'll build (visually no different, but built for production):
 
 <Preview
   height="400"
   title="Carbon Tutorial Step 5"
-  src="https://react-step-6--carbon-tutorial.netlify.com"
+  src="https://v11-react-step-5--carbon-tutorial.netlify.app"
   frameborder="no"
   allowtransparency="true"
   allowfullscreen="true"