Update relation type urls

backend/label_types/urls.py

@@ -19,7 +19,7 @@ urlpatterns = [
     path(route="span-types/<int:label_id>", view=SpanTypeDetail.as_view(), name="span_type"),
     path(route="category-type-upload", view=CategoryTypeUploadAPI.as_view(), name="category_type_upload"),
     path(route="span-type-upload", view=SpanTypeUploadAPI.as_view(), name="span_type_upload"),
-    path(route="relation_types", view=RelationTypeList.as_view(), name="relation_types_list"),
-    path(route="relation_type-upload", view=RelationTypeUploadAPI.as_view(), name="relation_type-upload"),
-    path(route="relation_types/<int:label_id>", view=RelationTypeDetail.as_view(), name="relation_type_detail"),
+path(route="relation-type-upload", view=RelationTypeUploadAPI.as_view(), name="relation_type-upload"),
+    path(route="relation-types", view=RelationTypeList.as_view(), name="relation_types_list"),
+    path(route="relation-types/<int:label_id>", view=RelationTypeDetail.as_view(), name="relation_type_detail"),
 ]