docs: update ready components pages

docs/components/button/examples/ButtonGradientShadowExample.vue

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+<template>
+  <div class="vp-raw inline-flex align-center gap-2 flex-wrap">
+    <Button gradient="blue" shadow>Blue with blue</Button>
+    <Button gradient="cyan" shadow>Cyan with cyan</Button>
+    <Button gradient="green" shadow>Green with green</Button>
+    <Button gradient="lime" shadow>Lime with lime</Button>
+    <Button gradient="pink" shadow>Pink with pink</Button>
+    <Button gradient="purple" shadow>Purple with purple</Button>
+    <Button gradient="red" shadow>Red with red</Button>
+    <Button gradient="teal" shadow>Teal with teal</Button>
+    <Button gradient="blue" shadow="red">Blue with red</Button>
+    <Button gradient="cyan" shadow="teal">Cyan with teal</Button>
+    <Button gradient="teal" shadow="purple">Teal with purple</Button>
+  </div>
+</template>
+<script setup>
+import { Button } from '../../../../src/index'
+</script>