Use outlined field for topic

aleksis/apps/alsijil/frontend/components/coursebook/documentation/LessonSummary.vue

@@ -7,9 +7,8 @@
     >
       <v-text-field
         class="flex-grow-1 min-width"
-        dense
         hide-details
-        filled
+        outlined
         :label="$t('alsijil.coursebook.summary.topic')"
         :value="documentation.topic"
         @input="topic = $event"