Update add-content-collections.mdx

src/content/docs/en/tutorials/add-content-collections.mdx

@@ -178,11 +178,15 @@ The steps below show you how to extend the final product of the Build a Blog tut
     };
     ```
 
+6. In order for Astro to recognize your schema, quit the dev server (`CTRL + C`) and run the following command: [`npx astro sync`](/en/reference/cli-reference/#astro-sync). This will define the `astro:content` module for the Content Collections API. Restart the dev server to continue with the tutorial.
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 ### Generate pages from a collection
 
-6. Create a page file called `src/pages/posts/[...slug].astro`. Your Markdown and MDX files no longer automatically become pages using Astro's file-based routing when they are inside a collection, so you must create a page responsible for generating each individual blog post.
+7. Create a page file called `src/pages/posts/[...slug].astro`. Your Markdown and MDX files no longer automatically become pages using Astro's file-based routing when they are inside a collection, so you must create a page responsible for generating each individual blog post.
 
-7. Add the following code to [query your collection](/en/guides/content-collections/#querying-collections) to make each blog post's slug and page content available to each page it will generate:
+8. Add the following code to [query your collection](/en/guides/content-collections/#querying-collections) to make each blog post's slug and page content available to each page it will generate:
 
     ```astro title="src/pages/posts/[...slug].astro"
     ---
@@ -201,7 +205,7 @@ The steps below show you how to extend the final product of the Build a Blog tut
     ---
     ```
 
-8. Render your post `<Content />` within the layout for Markdown pages. This allows you to specify a common layout for all of your posts.
+9. Render your post `<Content />` within the layout for Markdown pages. This allows you to specify a common layout for all of your posts.
 
     ```astro title="src/pages/posts/[...slug].astro" ins={15-17}
     ---
@@ -223,7 +227,7 @@ The steps below show you how to extend the final product of the Build a Blog tut
     </MarkdownPostLayout>
     ```
 
-9. Remove the `layout` definition in each individual post's frontmatter. Your content is now wrapped in a layout when rendered, and this property is no longer needed.
+10. Remove the `layout` definition in each individual post's frontmatter. Your content is now wrapped in a layout when rendered, and this property is no longer needed.
 
     ```md title="src/content/posts/post-1.md" del={2}
     ---
@@ -236,7 +240,7 @@ The steps below show you how to extend the final product of the Build a Blog tut
 
 ### Replace `Astro.glob()` with `getCollection()`
 
-10. Anywhere you have a list of blog posts, like the tutorial's Blog page (`src/pages/blog.astro/`), you will need to replace `Astro.glob()` with [`getCollection()`](/en/reference/api-reference/#getcollection) as the way to fetch content and metadata from your Markdown files.
+11. Anywhere you have a list of blog posts, like the tutorial's Blog page (`src/pages/blog.astro/`), you will need to replace `Astro.glob()` with [`getCollection()`](/en/reference/api-reference/#getcollection) as the way to fetch content and metadata from your Markdown files.
 
     ```astro title="src/pages/blog.astro" "post.data" "getCollection(\"posts\")" "/posts/${post.slug}/" del={7} ins={2,8}
     ---
@@ -250,7 +254,7 @@ The steps below show you how to extend the final product of the Build a Blog tut
     ---
     ```
 
-11. You will also need to update references to the data returned for each `post`. You will now find your frontmatter values on the `data` property of each object. Also, when using collections each `post` object will have a page `slug`, not a full URL.
+12. You will also need to update references to the data returned for each `post`. You will now find your frontmatter values on the `data` property of each object. Also, when using collections each `post` object will have a page `slug`, not a full URL.
 
     ```astro title="src/pages/blog.astro" "data" "/posts/$\{post.slug\}/" del={14} ins={15}
     ---
@@ -274,7 +278,7 @@ The steps below show you how to extend the final product of the Build a Blog tut
     </BaseLayout> 
     ```
 
-12. The tutorial blog project also dynamically generates a page for each tag using `src/pages/tags/[tag].astro` and displays a list of tags at `src/pages/tags/index.astro`. 
+13. The tutorial blog project also dynamically generates a page for each tag using `src/pages/tags/[tag].astro` and displays a list of tags at `src/pages/tags/index.astro`. 
 
           Apply the same changes as above to these two files:
 
@@ -339,7 +343,7 @@ The steps below show you how to extend the final product of the Build a Blog tut
 
 ### Update any frontmatter values to match your schema
 
-13. If necessary, update any frontmatter values throughout your project, such as in your layout, that do not match your collections schema. 
+14. If necessary, update any frontmatter values throughout your project, such as in your layout, that do not match your collections schema. 
 
     In the blog tutorial example, `pubDate` was a string. Now, according to the schema that defines types for the post frontmatter, `pubDate` will be a `Date`
     object.
@@ -358,7 +362,7 @@ The steps below show you how to extend the final product of the Build a Blog tut
 
 ### Update RSS function
 
-14. Lastly, the tutorial blog project includes an RSS feed. This function must also use `getCollection()` to return information from your blog posts. You will then generate the RSS items using the `data` object returned.
+15. Lastly, the tutorial blog project includes an RSS feed. This function must also use `getCollection()` to return information from your blog posts. You will then generate the RSS items using the `data` object returned.
 
     ```js title="src/pages/rss.xml.js" del={2,11} ins={3,6,12-17}
     import rss from '@astrojs/rss';