Fix title tag to have quotes again

Author: tdonohue

src/assets/i18n/en.json5

@@ -5758,7 +5758,7 @@
 
   "thumbnail.person.placeholder": "No Profile Picture Available",
 
-  title: "DSpace",
+  "title": "DSpace",
 
   "vocabulary-treeview.header": "Hierarchical tree view",