fix(input): correct props arrangement in suffix example (#3958)

Author: betavs

packages/components/input/__test__/__snapshots__/demo.test.js.snap

@@ -275,11 +275,11 @@ exports[`Input Input suffix demo works fine 1`] = `
   <t-input
     class="extra"
     label="标签文字"
+    maxcharacter="{{10}}"
     placeholder="请输入文字"
     tips="最多十个字"
   >
     <t-button
-      maxcharacter="{{10}}"
       size="extra-small"
       slot="extra"
       theme="primary"

packages/components/input/_example/suffix/index.wxml

@@ -5,8 +5,8 @@
   bind:click="click"
 />
 
-<t-input class="extra" label="标签文字" placeholder="请输入文字" tips="最多十个字">
-  <t-button slot="extra" theme="primary" maxcharacter="{{10}}" size="extra-small"> 操作按钮 </t-button>
+<t-input class="extra" label="标签文字" placeholder="请输入文字" tips="最多十个字" maxcharacter="{{10}}">
+  <t-button slot="extra" theme="primary" size="extra-small"> 操作按钮 </t-button>
 </t-input>
 
 <t-input label="标签文字" placeholder="请输入文字" suffixIcon="{{ { name: 'user-avatar', ariaLabel: '通讯录' } }}" />