Jay Pfaffman bd353201e3
Update head_tag.html
Fixes:

```
To prevent errors in tests, add a `pluginId` key to your `modifyClass` call. This will ensure the modification is only applied once.
```
2022-03-03 06:20:43 -08:00
..
2019-12-04 22:33:49 +01:00
2022-03-03 06:20:43 -08:00