docs: add dialect mapping (#13) #31

Job	Run time
Functional tests (MSSQL + MySQL + Postgres, no Oracle)	1m 0s
Build documentation	32s
Tests (Python 3.14)	21s
Tests (Python 3.11)	20s
Tests (Python 3.13)	24s
Tests (Python 3.12)	22s
Tests (Python 3.9)	28s
Lint (black, isort, flake8, mypy, import-linter)	40s
Tests (Python 3.10)	19s
Functional tests (Oracle, on-demand)	-1s
	4m 25s

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