fix citation link

app.py

@@ -615,7 +615,7 @@ with gr.Blocks() as app:
             Extract 3D pose from video and retarget it to a biomechanical model using [Kinesis](https://myolab.ai/blog/myokinesis).
 
             ⚠️ **Important:** Using Metrabs for video-based motion retargeting which is **ONLY FOR RESEARCH/ACADEMIC USE**.
-            Please cite the [paper](https://arxiv.org/abs/2409.06042) if you use this feature.
+            Please cite the [paper](https://arxiv.org/abs/2007.07227) if you use this feature.
             For commercial applications, please contact MyoLab at contacts@myolab.ai.
             """
         )