test: doctest for addNullEmbedFilters #1810

Job	Run time
Build aarch64 (Cabal, GHC ${{ matrix.ghc }})	0s
Build Linux (Cabal, GHC 9.0.2)	25m 43s
Build Linux (Cabal, GHC 9.2.4)	24m 37s
Build MacOS (Nix)	16m 47s
Build Linux static (Nix)	5m 10s
Get FreeBSD build from CirrusCI	5m 12s
Build Linux (Stack)	2m 42s
Build MacOS (Stack)	4m 40s
Build Windows (Stack)	5m 43s
Lint & check code style	2m 3s
Test memory (Nix)	6m 6s
Test (Nix)	7m 15s
Test PG 9.6 (Nix)	6m 54s
Test PG 10 (Nix)	5m 57s
Test PG 11 (Nix)	6m 9s
Test PG 12 (Nix)	5m 54s
Test PG 13 (Nix)	6m 40s
Test PG 14 (Nix)	5m 50s
Test PG 15 (Nix)	5m 38s
Prepare release	0s
Release on GitHub	0s
Release on Docker Hub	0s
Release Arm Builds on Docker Hub	0s
Remove copied files from server	0s
	2h 29m 0s

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