chore(checkbox-group): modify class name

src/packages/__VUE/checkbox/demo.vue

@@ -277,7 +277,7 @@ export default createDemo({
 .demo-check {
   margin-right: 10px;
 }
-.nut-checkboxgroup {
+.nut-checkbox-group {
   display: flex;
   flex-wrap: wrap;
 }

src/packages/__VUE/checkboxgroup/index.vue

@@ -84,7 +84,7 @@ export default create({
       return h(
         'view',
         {
-          class: 'nut-checkboxgroup'
+          class: componentName
         },
         slots.default?.()
       );

src/sites/mobile-taro/vue/src/dentry/pages/checkbox/index.vue

@@ -202,7 +202,7 @@ export default {
 .demo-check {
   margin-right: 10px;
 }
-.nut-checkboxgroup {
+.nut-checkbox-group {
   display: flex;
   flex-wrap: wrap;
 }