pgsql: PL/Python: Fix hint about returning composite type from Python

PL/Python: Fix hint about returning composite type from Python

('foo') is not a Python tuple: it is a string wrapped in parentheses. A
valid 1-element Python tuple is ('foo',).

Author: Daniele Varrazzo <daniele.varrazzo@gmail.com>

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/898d24ae2ad7195869c558eb6c126ff6a90474e8

Modified Files
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src/pl/plpython/expected/plpython_composite.out | 2 +-
src/pl/plpython/plpy_typeio.c | 4 ++--
2 files changed, 3 insertions(+), 3 deletions(-)

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