pgAdmin 4 commit: Clarify config settings that may need to be re-define

Clarify config settings that may need to be re-defined if SERVER_MODE or DATA_DIR are updated in an included config
file.

Branch
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master

Details
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https://git.postgresql.org/gitweb?p=pgadmin4.git;a=commitdiff;h=66a11232684bcacdcb55d92ba437022b2a22117a

Modified Files
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docs/en_US/config_py.rst | 7 ++++---
web/config.py            | 9 +++++----
2 files changed, 9 insertions(+), 7 deletions(-)