docs: negligible

Author: cloydlau

README.md

@@ -354,7 +354,7 @@ const JsonEditorVue = () => process.client
   ? import('json-editor-vue')
   : Promise.resolve({ render: h => h('div') })
 
-const value = ref(undefined)
+const value = ref()
 </script>
 ```
 
@@ -398,7 +398,7 @@ Vue.use(JsonEditorVue, {
 <script setup>
 import { ref } from 'vue'
 
-const value = ref(undefined)
+const value = ref()
 </script>
 ```
 

demo/nuxt2+vue2.7/pages/index.vue

@@ -11,5 +11,5 @@ const JsonEditorVue = () => process.client
   ? import('json-editor-vue')
   : Promise.resolve({ render: h => h('div') })
 
-const value = ref(undefined)
+const value = ref()
 </script>

docs/README.zh-CN.md

@@ -352,7 +352,7 @@ const JsonEditorVue = () => process.client
   ? import('json-editor-vue')
   : Promise.resolve({ render: h => h('div') })
 
-const value = ref(undefined)
+const value = ref()
 </script>
 ```
 
@@ -396,7 +396,7 @@ Vue.use(JsonEditorVue, {
 <script setup>
 import { ref } from 'vue'
 
-const value = ref(undefined)
+const value = ref()
 </script>
 ```