Doc: update bki.sgml's statements about OID ranges.
Commit neglected to make the docs match the code.
<para>
If <filename>genbki.pl</filename> needs to assign an OID to a catalog
entry that does not have a manually-assigned OID, it will use a value in
- the range 10000&mdash;11999. The server's OID counter is set to 12000
+ the range 10000&mdash;12999. The server's OID counter is set to 13000
at the start of a bootstrap run. Thus objects created by regular SQL
commands during the later phases of bootstrap, such as objects created
while running the <filename>information_schema.sql</filename> script,
- receive OIDs of 12000 or above.
+ receive OIDs of 13000 or above.
</para>
<para>
