pgAdmin 4 commit: Fix name of 'check-constraints' to follow the usuals

Fix name of 'check-constraints' to follow the usual singular convention.

Branch
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WEBPACK_DEVEL2

Details
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https://git.postgresql.org/gitweb?p=pgadmin4.git;a=commitdiff;h=57aab86228138ed7072ee4b035b4a7a245dfdbc5
Author: Murtuza Zabuawala <murtuza.zabuawala@enterprisedb.com>

Modified Files
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.../constraints/check_constraint/__init__.py       | 24 +++++++++++-----------
.../static/img/check-constraint-bad.svg            |  1 +
.../static/img/check-constraint.svg                |  1 +
.../static/img/check-constraints-bad.svg           |  1 -
.../static/img/check-constraints.svg               |  1 -
.../check_constraint/static/js/check_constraint.js | 16 +++++++--------
.../check_constraint/css/check_constraint.css      |  8 ++++----
.../tables/partitions/static/js/partition.js       |  4 ++--
.../databases/schemas/tables/static/js/table.js    |  4 ++--
9 files changed, 30 insertions(+), 30 deletions(-)