make blurb longer to fit other boxes

Author: cmaimone

_data/callouts/home.yml

@@ -9,8 +9,8 @@ items:
     link: newsletters/
     link_name: Newsletters
   - title: USRSE'25
-    subtitle: Help plan US-RSE's third conference.  Volunteers of all experience levels needed!
-    link: https://us-rse.org/usrse25/
+    subtitle: Help make US-RSE's third conference in 2025 great!  Volunteers of all experience levels are needed to join the conference planning committee.
+    link: https://us-rse.org/usrse25/about/organization/
     link_name: Volunteer
   - title: 2024 US-RSE Community Awards Winners Announced
     subtitle: >