Remove trailing spaces from the docs

doc/administration/geo/replication/troubleshooting.md

doc/administration/gitaly/configure_gitaly.md

doc/administration/object_storage.md

doc/api/metadata.md

doc/ci/cloud_deployment/ecs/deploy_to_aws_ecs.md

doc/ci/testing/code_quality.md

doc/development/cicd/pipeline_wizard.md

doc/development/code_review.md

...ent/gitlab_flavored_markdown/specification_guide/index.md

doc/development/pipelines.md

doc/development/snowplow/implementation.md

doc/integration/advanced_search/elasticsearch.md

doc/integration/jira/index.md

doc/user/application_security/dast/checks/209.1.md

doc/user/application_security/dast/checks/209.2.md

doc/user/application_security/dast/checks/319.1.md

doc/user/application_security/dast/checks/601.1.md

doc/user/clusters/agent/troubleshooting.md

doc/user/group/import/index.md

doc/user/infrastructure/iac/troubleshooting.md