APACHE_ERRORLOG_FORMAT environment variable not applied

[franbuehler]

The Apache ENV variable APACHE_ERRORLOG_FORMAT is not applied when starting the container.

https://github.com/coreruleset/modsecurity-crs-docker/tree/main?tab=readme-ov-file#apache-env-variables

[franbuehler]

I'll open a PR that adds the variable to the Apache configuration, here:
https://github.com/coreruleset/modsecurity-crs-docker/blob/main/apache/conf/extra/httpd-modsecurity.conf#L17