pgsql: doc: Fix Tamil language mention in PG 12 docs

doc: Fix Tamil language mention in PG 12 docs

Reported-by: John Naylor

Discussion: /messages/by-id/CACPNZCs2c7yLGKhtcL=h9OmZdwQQDshFs9Bxypo=Fc5b0TVsMQ@mail.gmail.com

Backpatch-through: 12

Branch
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REL_12_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/178ca6b26c3d59ff330b229f11fca89001749ea1

Modified Files
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doc/src/sgml/release-12.sgml | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)