pgsql: Add missing descriptions about '--timeout' and '--mode' to help

Add missing descriptions about '--timeout' and '--mode' to help
message. They are already implemented in the source code.
Suggestions about the message formatting from Tom Lane.

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/4efbb7d04f3481da1aaf75630c1203203f400b66

Modified Files
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src/bin/pg_ctl/pg_ctl.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)