docs: temporary use <Markdown>

Wait for Docus upgrade to move to `<ContentSlot>`

Author: farnabaz

docs/components/content/ExampleTheTitle.vue

@@ -1,5 +1,5 @@
 <template>
   <h1 class="text-4xl">
-    <ContentSlot :use="$slots.default" unwrap="p" />
+    <Markdown :use="$slots.default" unwrap="p" />
   </h1>
 </template>

docs/components/content/MyButton.vue

@@ -9,7 +9,7 @@ defineProps({
 
 <template>
   <button :class="type">
-    <ContentSlot :use="$slots.default" unwrap="p" />
+    <Markdown :use="$slots.default" unwrap="p" />
   </button>
 </template>