doc/examples/configure-index:

- add info on debug::acquire::cdrom

doc/examples/configure-index

@@ -433,6 +433,7 @@ Debug
   Acquire::Http "false";   // Show http command traffic
   Acquire::Https "false";   // Show https debug
   Acquire::gpgv "false";   // Show the gpgv traffic
+  Acquire::cdrom "false";   // Show cdrom debug output
   aptcdrom "false";        // Show found package files
   IdentCdrom "false";
   acquire::netrc "false";  // netrc parser