Update llms-full.txt example to use elevenlabs.io instead of cohere

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

Author: devin-ai-integration[bot]

fern/products/docs/pages/seo/llms-txt.mdx

@@ -29,7 +29,7 @@ Contains complete documentation content including the full text of all pages. Fo
 
 `llms-full.txt` is available only at the root of your documentation site.
 
-See an example: [docs.cohere.com/llms-full.txt](https://docs.cohere.com/llms-full.txt)
+See an example: [elevenlabs.io/docs/llms-full.txt](https://elevenlabs.io/docs/llms-full.txt)
 
 ### Examples