pgsql: C comment: fix typos with unnecessary apostrophes

C comment: fix typos with unnecessary apostrophes

Reported-by: Vinayak Pokale

Discussion: /messages/by-id/CAEySZvh7gPTOqMhuKOBXEt=qF_1BCvFQB4MAJ4yaTPJHxgX_zw@mail.gmail.com

Author: Vinayak Pokale

Backpatch-through: master

Branch
------
master

Details
-------
https://git.postgresql.org/pg/commitdiff/414e75540f058b23377219586abb3008507f7099

Modified Files
--------------
src/backend/commands/sequence.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)