Add link to RL course user progress app (#10)

- Add link to RL course user progress app (ba01ac70ea68d47e83c7853dcb1b6387ed0a0f74)


Co-authored-by: Michal Pawlowski <misza222@users.noreply.huggingface.co>

app.py

@@ -239,6 +239,8 @@ with block:
     You want to compare two agents? <a href="https://huggingface.co/spaces/ThomasSimonini/Compare-Reinforcement-Learning-Agents" target="_blank">It's possible using this Spaces demo 👀 </a>.
     
     🔧 There is an **environment missing?** Please open an issue.
+
+    For the RL course progress check out <a href="https://huggingface.co/spaces/ThomasSimonini/Check-my-progress-Deep-RL-Course" target="_blank"> User Progress App </a>
     """)
     
     #for rl_env in RL_ENVS: