Cleanup documentation #2079

Job	Run time
download_test_data	5s
build (ubuntu-latest)	2m 45s
build (macos-latest)	3m 40s
java_matrix	2s
unit_tests (21)	2m 49s
unit_tests (25)	3m 0s
generate_documentation	1m 6s
test_decoder	3m 6s
dependency_analysis	1m 21s
test_clara	5m 50s
test_run-groovy	47s
test_coatjava (ubuntu-latest, kpp)	6m 48s
test_coatjava (ubuntu-latest, eb-eftpi)	5m 50s
test_coatjava (ubuntu-latest, eb-eg)	1m 56s
test_coatjava (ubuntu-latest, eb-enc)	7m 28s
test_coatjava (ubuntu-latest, eb-epc)	1m 55s
spotbugs	6m 43s
test_coatjava (macos-latest, eb-ep, ./run-eb-tests.sh -100 electronproton)	3m 31s
test_coatjava (ubuntu-latest, eb-ep)	5m 34s
release_build	0s
deploy_web_pages	-1s
final	3s
	1h 4m 18s

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