Fix eol errors for docs

doc/administration/auth/ldap/index.md

doc/administration/gitaly/configure_gitaly.md

doc/administration/gitaly/index.md

doc/administration/packages/dependency_proxy.md

doc/administration/reference_architectures/50k_users.md

...dministration/troubleshooting/gitlab_rails_cheat_sheet.md

doc/api/secure_files.md

doc/ci/runners/saas/macos/environment.md

...development/database/migrations_for_multiple_databases.md

doc/development/fe_guide/graphql.md

doc/development/index.md

doc/development/service_ping/metrics_instrumentation.md

doc/development/testing_guide/end_to_end/feature_flags.md

doc/integration/alicloud.md

doc/topics/release_your_application.md

doc/user/admin_area/monitoring/background_migrations.md

doc/user/admin_area/settings/continuous_integration.md

doc/user/application_security/api_fuzzing/index.md

doc/user/application_security/dast_api/index.md

doc/user/clusters/agent/ci_cd_workflow.md