pgsql: Use "data directory" not "current directory" in error messages.

Use "data directory" not "current directory" in error messages.

The user receiving the message might not understand where the
server's "current directory" is.  "Data directory" seems clearer.
(This would not be good for frontend code, but both of these
messages are only issued in the backend.)

Kyotaro Horiguchi

Discussion: https://postgr.es/m/20230316.111646.1564684434328830712.horikyota.ntt@gmail.com

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/2333803d84ddabedc5ec5940a180245b4d4dfcca

Modified Files
--------------
contrib/adminpack/adminpack.c            | 2 +-
contrib/adminpack/expected/adminpack.out | 2 +-
src/backend/utils/adt/genfile.c          | 2 +-
3 files changed, 3 insertions(+), 3 deletions(-)