[Lesson view] Use correct label for remarks field in personal notes form

aleksis/apps/alsijil/templates/alsijil/class_register/lesson.html

@@ -298,7 +298,7 @@
                       <td>
                         <div class="input-field">
                           {{ form.remarks }}
-                          <label for="{{ form.absent.id_for_label }}">
+                          <label for="{{ form.remarks.id_for_label }}">
                             {% trans "Remarks" %}
                           </label>
                         </div>