roll_interval does not support "d" (day) duration

[StroppaFR]

Issue Details

Documentation about the roll_interval log rotation option at https://caddyserver.com/docs/caddyfile/directives/log#roll_interval states that it supports duration strings (https://caddyserver.com/docs/conventions#durations), including d for day.

But trying to set roll_interval 1d in a Caddyfile fails with an error when starting Caddy.

mywebsite:80 {
    log {
        output file /var/log/caddy/mywebsite.log {
            roll_interval 1d
        }
        format json
    }
    respond "OK"
}

# caddy --version
v2.11.4 h1:XKxkMTgNSizEvKG6QHue6cAsFOteU2qA61w2tKkCWi0=
# caddy run --environ --config /etc/caddy/Caddyfile
[...]
Error: adapting config using caddyfile: parsing caddyfile tokens for 'log': parsing roll_interval duration: time: unknown unit "d" in duration "1d", at /etc/caddy/Caddyfile:4

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