[DOCS] Cleaning up the User Guide (#2737) #2910

Job	Run time
should run ci	5s
GHA Security Analysis using Zizmor	16s
cache-pixi-lock	10s
build-and-upload-nightly-parcels	2m 10s
Flaky unit tests: ubuntu \| pixi run -e test tests-flaky	3m 12s
Validation tests \| pixi run tests-validation	2m 10s
TypeChecking: pixi run typing	2m 4s
Unit tests: ubuntu \| pixi run -e test tests	4m 30s
Unit tests: ubuntu \| pixi run -e test-py313 tests	3m 56s
Unit tests: windows \| pixi run -e test tests	12m 27s
Unit tests: ubuntu \| pixi run -e test-minimum tests	5m 25s
Unit tests: ubuntu \| pixi run -e test-py311 tests	6m 15s
Integration: ${{ matrix.os }} \| pixi run -e ${{ matrix.pixi-environment }} tests-notebooks	-1s
merge-test-artifacts	0s
	42m 39s

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