remove HTML ids with space

virtualmeetings/templates/virtualmeetings/VGM_detail.html

@@ -161,7 +161,7 @@
         {% for domain, spec in spec_list %}
             <div class="card">
                 <div class="card-body">
-                    <a href="#" class="card-link" data-toggle="collapse" data-target="#collapse{{ domain }}" aria-expanded="false" aria-controls="collapse{{ domain }}">{{ domain }}</a>
+                    <a href="#" class="card-link" data-toggle="collapse" data-target="#collapse{{ domain|cut:" " }}" aria-expanded="false" aria-controls="collapse{{ domain|cut:" " }}">{{ domain }}</a>
                 </div>
                 <!-- Domain -->
                 <div class="card-body collapse bg-white" id="collapse{{ domain|cut:" " }}" aria-labelledby="heading{{ domain|cut:" " }}" data-parent="#accordion">