better name

app/models/education/program.rb

@@ -130,6 +130,10 @@ class Education::Program < ApplicationRecord
     where(published: publication)
   }
 
+  def to_short_s
+    short_name.empty? ? to_s : short_name
+  end
+
   def to_s
     "#{name}"
   end

app/views/extranet/home/index.html.erb

@@ -46,11 +46,11 @@
 
 
   <div class="col-md-4 mt-5 mt-md-0">
-    <h2>Promotions actuelles</h2>
+    <h2>Promotions récentes</h2>
     <ul class="promotions">
       <% @cohorts.each do |cohort| %>
         <li>
-          <%= link_to cohort.program, cohort %>
+          <%= link_to cohort.program.to_short_s, cohort %>
           <b><%= cohort.academic_year %></b>
         </li>
       <% end %>