Update index.qmd

Author: dburkhardt

events/2023-08_neurips/index.qmd

@@ -1,5 +1,5 @@
 ---
-title: "Coming August 2023 - Single-Cell Perturbation Prediction"
+title: "Starting Sept. 11, 2023 - Single-Cell Perturbation Prediction"
 subtitle: Generalizing experimental interventions to unseen contexts, a NeurIPS 2023 competition
 description: |
   [See NeurIPS 2023 Competition Track](https://neurips.cc/Conferences/2023/CompetitionTrack){class="btn btn-primary" style="border: 1px solid white;"}