Fixes #1764: Fixed typos in export buttons

netbox/templates/dcim/devicetype_list.html

@@ -13,7 +13,7 @@
             Import device types
         </a>
     {% endif %}
-    {% include 'inc/export_button.html' with obj_type='devicetypes' %}
+    {% include 'inc/export_button.html' with obj_type='device types' %}
 </div>
 <h1>{% block title %}Device Types{% endblock %}</h1>
 <div class="row">

netbox/templates/dcim/rackgroup_list.html

@@ -13,7 +13,7 @@
             Import rack groups
         </a>
     {% endif %}
-    {% include 'inc/export_button.html' with obj_type='rackgroups' %}
+    {% include 'inc/export_button.html' with obj_type='rack groups' %}
 </div>
 <h1>{% block title %}Rack Groups{% endblock %}</h1>
 <div class="row">