chore: Update DeepSeek provider link in README

Author: miurla

README.md

@@ -182,7 +182,7 @@ This will allow you to use Morphic as your default search engine in the browser.
   - llama3-groq-8b-8192-tool-use-preview
   - llama3-groq-70b-8192-tool-use-preview
 - DeepSeek
-  - DeepSeek v3 (Unstable)[ttps://github.com/vercel/ai/issues/4313#issuecomment-2587891644]
+  - DeepSeek v3 [(Unstable)](https://github.com/vercel/ai/issues/4313#issuecomment-2587891644)
 
 ## ⚡ AI SDK Implementation