postgresql: fix caveat indentation

The extra-indented section was causing the
first 4 characters of the following section
to be truncated.

Closes #22706.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
pdf2htmlex: requires Lion or newer
pdf2htmlex 0.9

Closes #22690.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>