docs: update screenshot text to 'Multi-source settings'

Co-Authored-By: kenny <kenny@buildwithfern.com>

Author: devin-ai-integration[bot]

fern/products/docs/pages/preview-publish/images/multi-repo-settings.png

@@ -87,7 +87,7 @@ Open the [Fern Dashboard](https://dashboard.buildwithfern.com) and navigate to t
 - **Default path** — where users are redirected when they visit the root of your domain (e.g., `docs.example.com` redirects to `docs.example.com/docs`).
 - **Search / Ask AI behavior** — controls how [Ask Fern](/learn/docs/ai-features/ask-fern/overview) and search work across sub-paths.
 
-![Multi-repo settings in the Fern Dashboard](./images/multi-repo-settings.png)
+![Multi-source settings in the Fern Dashboard](./images/multi-repo-settings.png)
 
 Two search modes are available: