[improvement] update eslint rules (#2089)

packages/icon/demo/index.vue

@@ -1,7 +1,11 @@
 <template>
   <demo-section>
     <demo-block :title="$t('title')">
-      <van-col span="8" v-for="icon in icons" :key="icon">
+      <van-col
+        v-for="icon in icons"
+        :key="icon"
+        span="8"
+      >
         <van-icon :name="icon" />
         <span>{{ icon }}</span>
       </van-col>

packages/icon/index.vue

@@ -1,5 +1,9 @@
 <template>
-  <i :class="[classPrefix, `${classPrefix}-${name}`]" :style="style" v-on="$listeners">
+  <i
+    v-on="$listeners"
+    :class="[classPrefix, `${classPrefix}-${name}`]"
+    :style="style"
+  >
     <slot />
     <van-info :info="info" />
   </i>