doc: fix empty demo, close #5136

tangjinzhou · tangjinzhou · commit 615d7c7d32da · 2022-01-07T19:02:28.000+08:00
diff --git a/components/empty/demo/description.vue b/components/empty/demo/description.vue
@@ -17,5 +17,5 @@ Simplest Usage with no description.
 </docs>
 
 <template>
-  <a-empty :description="false" />
+  <a-empty :description="null" />
 </template>
