Add missing entry for OpenKlant2 configuration step #8360

Job	Run time
Check that documentation for configuration steps is up-to-date	0s
End-to-end tests, chromium	4m 18s
Build and check documentation	1m 41s
End-to-end tests, firefox	4m 13s
Run the Django test suite (main)	20m 23s
End-to-end tests, webkit	4m 20s
Run the Django test suite (elastic)	4m 48s
End-to-end tests, msedge	4m 26s
Run the Django test suite (openklant)	2m 45s
Upload coverage information to codecov	19s
Build (and push) Docker image	1m 40s
	48m 53s

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