Add dynamic head for Film page

pages/films/_id.vue

@@ -7,8 +7,10 @@
 <script>
 export default {
   name: "Film",
-  head: {
+  head() {
-    titleTemplate: "%s - Film"
+    return {
+      titleTemplate: `%s - ${this.film.title}`
+    };
   },
   validate({ params }) {
     const uuid = new RegExp(