Incorrect EXPLAIN ANALYZE output in bloom index docs

I was fixing up the patch in [1] with the intention of committing it
when I noticed that there are a few outdated EXPLAIN ANALYZE examples
in the documents for the bloom contrib module.

The example outputs look like they've been created with a 100 thousand
row table, but the commands given are to insert 10 million rows into
that table. I suspect someone did a 100x on the example row count at
some point during development and forgot to update the EXPLAIN output.

The patch I want to commit adds buffer outputs to these EXPLAINs, so I
kinda need to fix these before adding that, otherwise what I want to
add does not make any sense.

Patch attached. I propose to backpatch this fix.

David