fix: translation ipv4/6

src/www/templates/Firewall.vue

@@ -1,3 +1,5 @@
+<!-- If you modify this file, run `(p)npm run buildfirewall` -->
+
 <script>
 export default {
   name: 'Firewall',
@@ -74,8 +76,8 @@ export default {
       <thead>
         <tr>
           <th>{{ $t('fwInterface') }}</th>
-          <th>{{ $t('fwIv4') }}</th>
-          <th>{{ $t('fwIv6') }}</th>
+          <th>{{ $t('fwIpv4') }}</th>
+          <th>{{ $t('fwIpv6') }}</th>
         </tr>
       </thead>
       <tbody class="text-center">