Update validation.xml

Author: gherkins

Resources/config/validation.xml

@@ -85,7 +85,7 @@
             <constraint name="Length">
                 <option name="min">2</option>
                 <option name="minMessage">fos_user.group.short</option>
-                <option name="max">255</option>
+                <option name="max">180</option>
                 <option name="maxMessage">fos_user.group.long</option>
                 <option name="groups">Registration</option>
             </constraint>