fixes typo in PHP Lumen nginx root

frameworks/PHP/lumen/deploy/nginx.conf

@@ -21,7 +21,7 @@ http {
         listen       8080;
         server_name  localhost;
 
-        root /home/ubuntu/FrameworkBenchmarks/lumen/public;
+        root /home/ubuntu/FrameworkBenchmarks/lumen/public/;
         index  index.php;
 
         location / {
@@ -29,7 +29,7 @@ http {
         }
 
         location ~ \.php$ {
-           #try_files $uri =404;
+            try_files $uri =404;
             fastcgi_pass   fastcgi_backend;
             fastcgi_keep_conn on;
             fastcgi_index  index.php;