docs: 6.0.0 is shipped, and the probe table had a guess in it

Brings the opening current -- merged, tagged v6.0.0 at 1947426, CI green on all
three platforms -- and corrects the probe table, which listed `kernel_params` as
answering with 1 item. That 1 was a hardcoded literal in the example, not a
count. The reader answers nothing here: the cmdlet it depends on fails outright.

`crypto_accel` moves from 1 to 11 for the same reason, and `kernel_params` moves
to the silent column where it belongs.

The header now leads with the ratio, because it is the argument for the rest of
the file: fourteen defects came out of verifying a batch that was type-checked,
linted and looked finished, and two of them were caught by tests that already
existed.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>