docs: update disabled prop/demo for dialog

Change-Id: I7eaa2da3d5f1d62b874c6a6282d4cd38229bdeda

one/docs/demo/dialog/status.vue

@@ -0,0 +1,50 @@
+<template>
+<article>
+  <div class="op-wrap">
+    <veui-button @click="aOpen = true">
+        Open Dialog
+    </veui-button>
+    <veui-checkbox v-model="loading">Loading</veui-checkbox>
+    <veui-checkbox class="ml-3p" v-model="disabled">Disabled</veui-checkbox>
+  </div>
+  <veui-dialog
+    :open.sync="aOpen"
+    title="Dialog A"
+    :loading="loading"
+    :disabled="disabled"
+  >
+    The content of Dialog A.
+  </veui-dialog>
+</article>
+</template>
+
+<script>
+import { Dialog, Button, Checkbox } from 'veui'
+
+export default {
+  components: {
+    'veui-dialog': Dialog,
+    'veui-button': Button,
+    'veui-checkbox': Checkbox
+  },
+  data () {
+    return {
+      aOpen: false,
+      disabled: false,
+      loading: false
+    }
+  }
+}
+</script>
+
+<style lang="less" scoped docs>
+.veui-button {
+  margin-right: 20px;
+}
+.op-wrap {
+    display: flex;
+}
+.ml-3p {
+    margin-left: 12px;
+}
+</style>