fix root path

frameworks/PHP/fat-free/deploy/nginx.conf

@@ -65,7 +65,7 @@ http {
         #    proxy_pass   http://127.0.0.1;
         #}
 
-        root /home/tfb/FrameworkBenchmarks/php-fatfree/;
+        root /home/ubuntu/FrameworkBenchmarks/fat-free/;
         index  index.php;
 
         location / {
@@ -128,4 +128,4 @@ http {
     #    }
     #}
 
-}
+}