Update index.mdx

Meta title and description.

src/pages/index.mdx

@@ -1,6 +1,6 @@
 ---
-title: Turn your computer into an AI computer
-description: Run LLMs like Mistral or Llama2 locally and offline on your computer, or connect to remote AI APIs like OpenAI’s GPT-4 or Groq.
+title: Jan: Open source ChatGPT-alternative that runs 100% offline
+description: Chat with AI without privact concerns. Jan is an open-source alternative to ChatGPT, running AI models locally on your device.
 keywords:
   [
     Jan,
@@ -38,4 +38,4 @@ export const getStaticProps = async() => {
   }
 }
 
-<Home />
+<Home />