minor changes

backend/src/app.js

@@ -73,6 +73,8 @@ app.post('/api/documents', upload.array('documents'), async (req, res) => {
 const frontendDistPath = path.join(__dirname, '../dist');
 
 app.use(express.static(frontendDistPath));
+
+// Any GET request that didn't match an API route above gets served index.html
 app.get('*', (req, res) => {
   res.sendFile(path.join(frontendDistPath, 'index.html'));
 });