Run whitespace cleanup

doc/administration/audit_events.md

doc/administration/auth/ldap/index.md

doc/administration/geo/secondary_proxy/index.md

doc/administration/instance_limits.md

doc/administration/repository_storage_types.md

doc/api/members.md

doc/ci/git_submodules.md

doc/ci/pipelines/merge_trains.md

doc/development/adding_database_indexes.md

doc/development/contributing/merge_request_workflow.md

doc/development/fe_guide/vue.md

doc/development/fe_guide/vue3_migration.md

doc/development/service_ping/implement.md

doc/development/service_ping/index.md

doc/development/sidekiq_style_guide.md

doc/development/snowplow/implementation.md

doc/integration/elasticsearch.md

doc/integration/jira/dvcs.md

doc/security/webhooks.md

doc/subscriptions/gitlab_com/index.md