[FIX] Use proper HTML5 tags instead of self-closing XML/XHTML tags

allianceauth/services/modules/openfire/templates/services/openfire/broadcast.html

@@ -19,7 +19,7 @@
                     <form class="form-signin" role="form" action="" method="POST" onsubmit="submitbutton.disabled = true; return true;">
                         {% csrf_token %}
                         {{ form|bootstrap }}
-                        <br/>
+                        <br>
                         <button class="btn btn-lg btn-primary btn-block" name="submitbutton" type="submit">{% translate "Broadcast" %}
                         </button>
                     </form>

allianceauth/services/modules/teamspeak3/templates/services/teamspeak3/teamspeakjoin.html

@@ -12,11 +12,11 @@
         <div class="container-fluid">
             <div class="col-md-4 col-md-offset-4">
                 <a href="ts3server://{{ public_url }}?token={{ authinfo.teamspeak3_perm_key }}&nickname={{ authinfo.teamspeak3_uid }}" class="btn btn-primary btn-block btn-lg" title="Join">{% translate "Join Server" %}</a>
-                <br/>
+                <br>
                 <form class="form-signin" role="form" action="{% url 'teamspeak3:verify' %}" method="POST">
                     {% csrf_token %}
                     {{ form|bootstrap }}
-                    <br/>
+                    <br>
                     <button class="btn btn-lg btn-primary btn-block" type="submit">{% translate "Continue" %}</button>
                 </form>
                 </div>