Typo in Bootstrap class name

```console
$ git grep from-group
src/main/frontend/src/components/HideImageForm.js:  <div className="form-group from-group-sm">
src/main/webapp/WEB-INF/views/series/info.html: <div class="form-group from-group-sm">
src/main/webapp/WEB-INF/views/series/info.html: <div class="form-group from-group-sm" th:if="${allowReplacingImages}">
```

`s/from-group-sm/form-group-sm/`