Check documentation on CI #1339

Job	Run time
check_documentation	8s
compute_package_version	2s
build_and_test (ubuntu-latest, Release, roslyn3.8)	2m 53s
build_and_test (ubuntu-latest, Release, roslyn4.2)	3m 6s
build_and_test (ubuntu-latest, Release, roslyn4.4)	3m 16s
build_and_test (ubuntu-latest, Release, roslyn4.6)	3m 7s
build_and_test (ubuntu-latest, Release, roslyn4.8)	3m 4s
build_and_test (ubuntu-latest, Release, default)	2m 58s
build_and_test (windows-latest, Release, roslyn3.8)	7m 41s
build_and_test (windows-latest, Release, roslyn4.2)	6m 21s
build_and_test (windows-latest, Release, roslyn4.4)	6m 46s
build_and_test (windows-latest, Release, roslyn4.6)	6m 35s
build_and_test (windows-latest, Release, roslyn4.8)	7m 44s
build_and_test (windows-latest, Release, default)	7m 14s
create_nuget	2m 11s
validate_nuget	1m 6s
deploy	23s
create_release	0s
	1h 4m 35s

Provide feedback