Add explanation about boolean configurations in env/fs (#2925) #13246

Job	Run time
towncrier_check	8s
check_if_release_branch	1s
changed_files	6s
build mirrord CLI	0s
lint	3m 41s
check-rust-docs	1m 1s
macos_tests	24m 58s
integration_tests	12m 25s
test_agent	3m 13s
test_agent_image	6m 10s
test_cli_image	6m 44s
lint_markdown	0s
intellij_e2e_on_release_branch	0s
e2e (docker)	10m 41s
vscode_e2e_on_release_branch	0s
e2e (containerd)	10m 20s
ci	1s
	1h 19m 29s

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