docs: update docs (#4466)

* chore: fixed known issues with form components

* docs: add vben form doc

docs/src/demos/vben-count-to-animator/custom/index.vue

@@ -0,0 +1,12 @@
+<script lang="ts" setup>
+import { VbenCountToAnimator } from '@vben/common-ui';
+</script>
+<template>
+  <VbenCountToAnimator
+    :duration="3000"
+    :end-val="2000000"
+    :start-val="1"
+    prefix="$"
+    separator="/"
+  />
+</template>