콜아웃 인라인 링크 렌더링 개선

components/content/ContentMarkdownCalloutEditor.vue

@@ -109,7 +109,6 @@ const onBodyInput = (payload) => {
       <ContentMarkdownEditableInline
         block-class="content-markdown-callout-editor__body min-w-0 text-[15px] leading-8 text-[var(--site-text)]"
         enter-mode="multiline"
-        plain-text
         arrow-exit-creates-line
         preserve-empty-line-on-full-delete
         :source-line="bodySourceLine"