make INTERFACE_FHRPGROUPS use FHRPGROUPS _str_ representation

Author: renatoalmeidaoliveira

netbox/dcim/tables/template_code.py

@@ -64,7 +64,7 @@
 
 INTERFACE_FHRPGROUPS = """
   {% for assignment in value.all %}
-    <a href="{{ assignment.group.get_absolute_url }}">{{ assignment.group.get_protocol_display }}: {{ assignment.group.group_id }}</a>
+    <a href="{{ assignment.group.get_absolute_url }}">{{ assignment.group }}</a>
   {% endfor %}
 """