Fixes formatting

backend/app.js

@@ -40,12 +40,12 @@ app.use(function (req, res, next) {
 	}
 
 	res.set({
-		'X-XSS-Protection':          '1; mode=block',
-		'X-Content-Type-Options':    'nosniff',
-		'X-Frame-Options':           x_frame_options,
-		'Cache-Control':             'no-cache, no-store, max-age=0, must-revalidate',
-		Pragma:                      'no-cache',
-		Expires:                     0
+		'X-XSS-Protection':       '1; mode=block',
+		'X-Content-Type-Options': 'nosniff',
+		'X-Frame-Options':        x_frame_options,
+		'Cache-Control':          'no-cache, no-store, max-age=0, must-revalidate',
+		Pragma:                   'no-cache',
+		Expires:                  0
 	});
 	next();
 });