Update column widths for flyer and downloads sections

Adjusted column widths from 4 to 6 for better alignment and layout consistency across event detail cards. This ensures improved visual balance and responsiveness for user experience.

core/templates/core/event_page.html

@@ -203,7 +203,7 @@
                     </div>
                 {% endif %}
                 {% if self.flyer %}
-                    <div class="col-lg-4 col-md-6 col-12 mb-4">
+                    <div class="col-lg-6 col-12 mb-4">
                         <div class="card h-100 border-0 shadow-sm event-detail-card">
                             <div class="card-body">
                                 <h3 class="card-title mb-4">
@@ -221,7 +221,7 @@
                     </div>
                 {% endif %}
                 {% if self.downloads %}
-                    <div class="col-lg-4 col-md-6 col-12 mb-4">
+                    <div class="col-lg-6 col-12 mb-4">
                         <div class="card h-100 border-0 shadow-sm event-detail-card">
                             <div class="card-body">
                                 <h3 class="card-title mb-4">