fix: typo

Author: abernier

docs/getting-started/authoring.mdx

@@ -41,11 +41,11 @@ You can use any [GitHub Flavored Markdown](https://github.github.com/gfm/) synta
 
 Plus, all exported [`components/mdx/index.tsx`](components/mdx/index.tsx) MDX components.
 
-### Intro
+### `Intro`
 
 ```md
 <Intro>
-  This is an intro. Here you can write a short description of the article, longer than the `description`, eventually with [links](#void), lists, etc.
+  This is an intro. Here you can write a long description of the article, longer than the frontmatter `description`, eventually with [links](#), lists, etc.
 
   Multiple paragraphs are also possible, or anything.
 </Intro>
@@ -55,7 +55,7 @@ Plus, all exported [`components/mdx/index.tsx`](components/mdx/index.tsx) MDX co
   <summary>Result</summary>
 
 <Intro>
-  This is an intro. Here you can write a short description of the article, longer than the `description`, eventually with [links](#void), lists, etc.
+  This is an intro. Here you can write a long description of the article, longer than the frontmatter `description`, eventually with [links](#), lists, etc.
 
   Multiple paragraphs are also possible, or anything.
 </Intro>