Fix inconsistent spacing in nginx.conf

Author: jcormier

docker/nginx.conf

@@ -42,8 +42,8 @@ http {
         ssl_ciphers "HIGH:!aNULL:!MD5 or HIGH:!aNULL:!MD5:!3DES";
         ssl_prefer_server_ciphers on;
 
-	auth_basic "restricted";
-	auth_basic_user_file /security/passwords.conf;
+        auth_basic "restricted";
+        auth_basic_user_file /security/passwords.conf;
 
         location /api {
                 proxy_pass              http://127.0.0.1:8080;
@@ -58,7 +58,7 @@ http {
 
         location / {
                 root /opt/factorio-server/app;
-		try_files $uri /index.html;
+                try_files $uri /index.html;
         }
 
     }