pgsql: docs: Fix column count attribute in table

docs: Fix column count attribute in table Nothing seems to actually depend on the attribute, as the docs built successfully, but let's be tidy. Reported offlist by Matthias van de Meent Branch -- master Details --- https://git.postgresql.org/pg/commitdiff/ea3f9b6da34a1a4dc2c0c118789587c

Re: pgsql: docs: Fix column count attribute in table

Heikki Linnakangas writes: > docs: Fix column count attribute in table > Nothing seems to actually depend on the attribute, as the docs built > successfully, but let's be tidy. Actually, it broke the PDF docs build, as per crake. regards, tom lane