Add support for /example-note.txt path format

[René Coignard]

[René Coignard]

location / {
    try_files $uri $uri/ @rewrite;
}

location = /sitemap.xml {
    try_files $uri /index.php?go=sitemap.xml;
}

location @rewrite {
    rewrite ^/(.+)\.txt/$ $scheme://$host/$1.txt permanent;
    rewrite ^/(.+)\.txt$ /index.php?go=$1 last;
    rewrite ^/([^/]+)$ $scheme://$host/$1/ permanent;
    rewrite ^/(.*)/$ /index.php?go=$1 last;
}