NGIX Rewrite URL

I've updated my blog (again). Now I am using Material for MkDocs. With my old setup, I had a misconfiguration that caused the URL to be set to /blog/posts/<article>. The new URL is just /blog/<article>.

I want to fix that by using NGINX rewrite rules. Here's how I did it:

location / {
    try_files $uri $uri/ =404 /index.php?$args;
    set_real_ip_from 172.22.0.1;
    proxy_set_header X-Forwarded-For $remote_addr;
    rewrite ^/blog/posts/(.*)$ /blog/$1 permanent;
}

Check the configuration file for errors with nginx -t and restart the server.