Update _index.md

Author: christymelucci

content/_index.md

@@ -30,7 +30,7 @@ carousel:
     alt: View Post
     image: ensemble-hero.jpg
   - pre: Research
-    title: Collaborative Hubs: Making the Most of Predictive Epidemic Modeling
+    title: "Collaborative Hubs: Making the Most of Predictive Epidemic Modeling"
     link: https://doi.org/10.2105/AJPH.2022.306831
     alt: View Paper
     image: research-hero-collaborative-hubs.jpg