Re-phrase log message: mime.types is not a log file :)

This is now also consistent with 2.0/2.1.

PR:
Obtained from:
Submitted by:
Reviewed by:


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@101144 13f79535-47bb-0310-9956-ffa450edef68