Update CNAME value to b7278b3c9357963d.vercel-dns-013.com in custom domain documentation (#1518)

Co-authored-by: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Co-authored-by: [email protected] <[email protected]>

Author: devin-ai-integration[bot]

fern/products/docs/pages/getting-started/setting-up-your-domain.mdx

@@ -42,7 +42,7 @@ Log in to your domain registrar's dashboard and navigate to the DNS settings for
 <CodeBlock title="CNAME Record (Subdomain)">
 ```
 Type    Name    Value
-CNAME   docs    [unique CNAME value provided by Fern]
+CNAME   docs    b7278b3c9357963d.vercel-dns-013.com
 ```
 </CodeBlock>
 
@@ -142,7 +142,7 @@ You'll need the following DNS records configured for your root domain.
 <CodeBlock title="CNAME Record (WWW Subdomain)">
 ```
 Type    Name    Value
-CNAME   www     [unique CNAME value provided by Fern]
+CNAME   www     b7278b3c9357963d.vercel-dns-013.com
 ```
 </CodeBlock>
 
@@ -172,4 +172,4 @@ Once Fern has completed your setup, you'll be able to access your documentation
 
 </Steps>
 </Accordion>
-</AccordionGroup>            
+</AccordionGroup>