Disk cache: fix the description of data\cache_tests\bad_rankings2

BUG=none
TEST=none

No actual code change.

Review URL: http://codereview.chromium.org/118017

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@17236 0039d316-1c4b-4281-b951-d872f2087c98

net/data/cache_tests/bad_rankings2/contents.txt

 Index header:
 num_entries: 2
 num_bytes: 27
-this_id: 1
-table_len: 64k
+this_id: 2
+table_len: 128k
 
 head: 0x90000001
 tail: 0x90000000