dashboard: fix flake8 warnings

circle/dashboard/forms.py

@@ -956,7 +956,7 @@ class VmPortRemoveForm(OperationForm):
                 AnyTag(
                     "div",
                     HTML(format_html(_("<label>Port:</label> {0}/{1}"),
-                        escape(self.rule.dport), escape(self.rule.proto))),
+                         escape(self.rule.dport), escape(self.rule.proto))),
                     css_class="form-group",
                 ),
                 Field("rule"),
@@ -989,7 +989,8 @@ class VmPortAddForm(OperationForm):
             helper.layout = Layout(
                 AnyTag(
                     "div",
-                    HTML(format_html(_("<label>Host:</label> {0}"), self.host)),
+                    HTML(format_html(
+                        _("<label>Host:</label> {0}"), self.host)),
                     css_class="form-group",
                 ),
                 Field("host"),

circle/dashboard/views/vm.py

@@ -270,7 +270,6 @@ class VmDetailView(GraphMixin, CheckedDetailView):
             return redirect(reverse_lazy("dashboard.views.detail",
                             kwargs={'pk': self.object.pk}))
 
-
     def __abort_operation(self, request):
         self.object = self.get_object()