Update Bookshelf.jsx to fix double quotes

Author: ragxorus

frontend/src/routes/Bookshelf.jsx

@@ -15,8 +15,8 @@ function Bookshelf({ backend, user }) {
   const [displayMode, setDisplayMode] = useState(localStorage.getItem('displayMode') || 'graph');
 
   const displayModesList = ['graph', 'list'];
-
-  document.title = "Hyperglosae";
+  
+  document.title = 'Hyperglosae';
 
   useEffect(() => {
     backend.getAllDocuments(user)