improved v-for syntax in checkbox group examples

Author: Sqrcz

docs/components/checkbox.md

@@ -94,7 +94,7 @@ When using the checkbox with `arrays` or `objects`, the selected values will be
 <template>
   <div class="space-y-2">
     <fwb-checkbox
-      v-for="fruit, i in fruits"
+      v-for="(fruit, i) in fruits"
       :key="i"
       v-model="selectedFruits"
       :label="fruit"

docs/components/checkbox/examples/FwbCheckboxExampleGroup.vue

@@ -2,7 +2,7 @@
   <div class="vp-raw">
     <div class="space-y-2">
       <fwb-checkbox
-        v-for="fruit, i in fruits"
+        v-for="(fruit, i) in fruits"
         :key="i"
         v-model="selectedFruits"
         :label="fruit"