PEP fixes

InvenTree/plugin/api.py

@@ -147,7 +147,7 @@ class PluginSettingDetail(generics.RetrieveUpdateAPIView):
 
         if key not in settings:
             raise NotFound(detail=f"Plugin '{plugin_slug}' has no setting matching '{key}'")
-        
+
         return PluginSetting.get_setting_object(key, plugin=plugin)
 
     # Staff permission required

InvenTree/plugin/registry.py

@@ -71,7 +71,7 @@ class PluginsRegistry:
         if slug not in self.plugins:
             logger.warning(f"Plugin registry has no record of plugin '{slug}'")
             return None
-        
+
         return self.plugins[slug]
 
     def call_plugin_function(self, slug, func, *args, **kwargs):