Add TODO for links to group-timetables

aleksis/apps/chronos/frontend/components/Substitutions.vue

@@ -37,6 +37,9 @@ import CRUDList from "aleksis.core/components/generic/CRUDList.vue";
       <v-row>
         <v-col> {{ $t("chronos.substitutions.affected_groups") }} </v-col>
         <v-col>
+          <!-- TODO: Link to group-timetable as well -->
+          <!-- as soon as it becomes possible to resolve a -->
+          <!-- group-timetable from the lesson-event group too. -->
           <v-chip
             v-for="group in affectedGroups"
             class="ma-1"