[ci skip] Improve formatting and yml
Merge pull request #14856 from Gaurav2728/gaurav-typo_fix

[ci skip] Improve formatting and yml
PostgreSQL Timestamps always map to `:datetime`.

The PG Adapter should use `:datetime` consistently instead of mapping
mispellings to `:timestamp`.

See #14513
Merge pull request #14859 from jefflai2/datetime_type

PostgreSQL Timestamps always map to `:datetime`.