docs: update form demo

tangjinzhou · tangjinzhou · commit 056ef16f5861 · 2019-05-26T15:30:55.000+08:00
diff --git a/components/form/demo/dynamic-form-item.vue b/components/form/demo/dynamic-form-item.vue
@@ -26,7 +26,6 @@ Add or remove form items dynamically.
           `names[${k}]`,
           {
             validateTrigger: ['change', 'blur'],
-            preserve: true,
             rules: [{
               required: true,
               whitespace: true,

Original file line number	Diff line number	Diff line change
`@@ -26,7 +26,6 @@ Add or remove form items dynamically.`
`26`	`26`	`names[${k}]`,
`27`	`27`	`{`
`28`	`28`	`validateTrigger: ['change', 'blur'],`
`29`		`- preserve: true,`
`30`	`29`	`rules: [{`
`31`	`30`	`required: true,`
`32`	`31`	`whitespace: true,`