pgsql: Improve spelling of new FINALFUNC_MODIFY aggregate attribute.

Improve spelling of new FINALFUNC_MODIFY aggregate attribute.

I'd used SHARABLE as a value originally, but Peter Eisentraut points out
that dictionaries agree that SHAREABLE is the preferred spelling.
Run around and change that before it's too late.

Discussion: https://postgr.es/m/d2e1afd4-659c-50d6-1b20-7cfd3675e909@2ndquadrant.com

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/f755a152d4e3e6f913c6b7b6afe1785b1171c1cb

Modified Files
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doc/src/sgml/ref/create_aggregate.sgml | 19 ++++++++++---------
doc/src/sgml/xaggr.sgml | 4 ++--
src/backend/commands/aggregatecmds.c | 6 +++---
src/backend/executor/nodeAgg.c | 22 +++++++++++-----------
src/bin/pg_dump/pg_dump.c | 8 ++++----
src/bin/pg_dump/t/002_pg_dump.pl | 4 ++--
src/include/catalog/pg_aggregate.h | 2 +-
src/include/executor/nodeAgg.h | 4 ++--
src/test/regress/expected/create_aggregate.out | 2 +-
src/test/regress/sql/create_aggregate.sql | 2 +-
10 files changed, 37 insertions(+), 36 deletions(-)