docs: update version display in AppHeader to reflect dynamic versioning

- Changed the hardcoded version 'v5' to dynamically display the version from the runtime configuration, enhancing maintainability and accuracy of version representation.

docs/app/components/AppHeader.vue

@@ -65,7 +65,7 @@ const version = useRuntimeConfig().public.pkgVersion
         variant="subtle"
         size="sm"
       >
-        v5
+        {{ version }}
       </UBadge>
     </template>