Hi, it is not really a typo, under 6.6 it reads:
When we configure a package (this happens with dpkg --install and dpkg --configure), we first update any conffiles and then call: ^ The marked 's' (in conffiles) is not in the <samp> and therefore appearing in normal font. I found this in version 3.5.5.0, 2001-06-01. Thanks, Frank