fix error

Author: devalog

fern/products/sdks/reference/generators-yml-reference.mdx

@@ -802,6 +802,7 @@ groups:
 
 <ParamField path="package-description" type="string" required={false} toc={true}>
 A brief description of what your generated SDK does and its key features. This appears in the `package.json` description field and package registry listings.
+</ParamField>
 
 <ParamField path="email" type="string" required={false} toc={true}>
 Contact email for the package maintainer or support team.