Fix typo in lmsys link

app.py

@@ -199,7 +199,7 @@ with gr.Blocks(
         <div style="text-align: center; max-width: 650px; margin: auto;">
             <h1 style="font-weight: 900; margin-top: 5px;">🔬 Progress Tracker: Open vs. Proprietary LLMs 🔬</h1>
             <p style="text-align: left; margin-top: 30px; margin-bottom: 30px; line-height: 20px;">
-            This app visualizes the progress of proprietary and open-source LLMs over time as scored by the <a hfref="https://leaderboard.lmsys.org/">LMSYS Chatbot Arena</a>.
+            This app visualizes the progress of proprietary and open-source LLMs over time as scored by the <a href="https://leaderboard.lmsys.org/">LMSYS Chatbot Arena</a>.
             The idea is inspired by <a href="https://www.linkedin.com/posts/maxime-labonne_arena-elo-graph-updated-with-new-models-activity-7187062633735368705-u2jB">this great work</a> 
             from <a href="https://huggingface.co/mlabonne/">Maxime Labonne</a>, and is intended to stay up-to-date as new models are released and evaluated.
             <div style="text-align: left;">