お知らせの固定表示 (#5887)

* お知らせの固定

* ✌️

* Update index.home.vue

Co-authored-by: syuilo <Syuilotan@yahoo.co.jp>

src/client/components/misskey-flavored-markdown.vue

@@ -1,5 +1,5 @@
 <template>
-<mfm-core v-bind="$attrs" class="havbbuyv" :class="{ nowrap: $attrs['nowrap'] }" v-once/>
+<mfm-core v-bind="$attrs" class="havbbuyv" :class="{ nowrap: $attrs['nowrap'] }"/>
 </template>
 
 <script lang="ts">