add beltane copy

src/index.njk

@@ -17,8 +17,15 @@ title: The Beall Greenhouses
 
 {% css %}{% include "css/ml-embed.css" %}{% endcss %}
 
+<h2>Blessed Beltane</h2>
+<p class="under-header">
+  We are excited to present this <a href="/events/2026-beltane/">one day
+  special event to celebrate Beltane</a> during the VIVA Studio tour. Come
+  celebrate spring with us!
+</p>
+
 <h2>Imbolc creates community</h2>
-<p class="under-header">Our <a href="/events/2026-imbolc">Imbolc
+<p class="under-header">Our <a href="/events/2026-imbolc/">Imbolc
 		Celebration & Market</a> was fantastic.
 	Visitors could learn to make a Brigid's Cross, and dog photographs meant
 	an abundance of furry friends.</p>