Fix: Capitalize 'Docs' as it's a Fern product name

Co-Authored-By: Devin Logan <[email protected]>

Author: devin-ai-integration[bot]

fern/products/api-def/pages/overrides.mdx

@@ -96,7 +96,7 @@ paths:
 </Step>
 </Steps>
 
-## Separate overrides for SDKs and docs
+## Separate overrides for SDKs and Docs
 
 For separate SDK and documentation configurations, you can use different override files in separate folders with their own `generators.yml` files.