fix org join link

README.md

@@ -8,7 +8,7 @@ pinned: false
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 <div class="grid lg:grid-cols-2 gap-x-4">
-  <h1 class="my-8 lg:col-span-2" style="font-size:20px; font-weight:bold">Join organization by clicking <a href="https://huggingface.co/organizations/SIGGRAPH2022/share/BpynfJtfsOTktlmXYoKNqqCnyufKLFXuay" style="text-decoration: underline" target="_blank">here</a></h1>
+  <h1 class="my-8 lg:col-span-2" style="font-size:20px; font-weight:bold">Join organization by clicking <a href="https://huggingface.co/organizations/SIGGRAPH2022/share/lKvMytVEyvqyWBIbfrcZTeBhNQLXklhIHG" style="text-decoration: underline" target="_blank">here</a></h1>
   <p class="lg:col-span-2">This organization invites participants to add gradio demos/models/datasets for conference papers on huggingface (Note: This is not a official SIGGRAPH sponsored event)</p>
 <h4 class="my-8 lg:col-span-2" style="font-size:20px; font-weight:bold">Hugging Face Gradio SIGGRAPH 2022 event
 </h4>