docs(website): style tweaks for readability and more open spacing #22544

Job	Run time
build (./gradlew build -x :metadata-ingestion:build -x :metadata-ingestion:check -x docs-website:...	15m 40s
build (./gradlew build -x :metadata-ingestion:build -x :metadata-ingestion:check -x docs-website:...	17m 38s
event-file	2s
quickstart-compose-validation	20s
build (./gradlew :datahub-frontend:build :datahub-web-react:build --parallel, UTC)	22m 18s
build (./gradlew :datahub-frontend:build :datahub-web-react:build --parallel, America/New_York)	18m 49s
build (./gradlew :metadata-ingestion-modules:airflow-plugin:build --parallel, UTC)	7m 23s
build (./gradlew :metadata-ingestion-modules:airflow-plugin:build --parallel, America/New_York)	7m 24s
	1h 29m 34s

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