syslog(3): example error log message should use LOG_ERR level (PR 216756)

[bcr]

Summary

This is the patch attached to bug 216756. The last entry in the EXAMPLE section looks like this:

syslog(LOG_INFO|LOG_LOCAL2, "foobar error: %m");

Since the message says that an error is logged, it should not be LOG_INFO, but LOG_ERROR instead. The patch addresses that.

Test Plan

1. Apply the patch to head/lib/libc/gen/syslog.3
2. Check the output: man ./head/lib/libc/gen/syslog.3

[ngie]