April: fix trailing whitespace in GitLab project

doc/administration/geo/setup/two_single_node_sites.md

doc/administration/reference_architectures/10k_users.md

doc/administration/reference_architectures/1k_users.md

doc/administration/reference_architectures/25k_users.md

doc/administration/reference_architectures/2k_users.md

doc/administration/reference_architectures/3k_users.md

doc/administration/reference_architectures/5k_users.md

doc/architecture/blueprints/ai_gateway/index.md

...rchitecture/blueprints/cells/infrastructure/postgresql.md

doc/architecture/blueprints/organization/index.md

doc/ci/jobs/job_rules.md

doc/ci/steps/index.md

doc/development/ai_features/index.md

...elopment/merge_request_concepts/mergeability_framework.md

doc/subscriptions/subscription-add-ons.md

doc/update/versions/gitlab_16_changes.md

doc/user/analytics/value_streams_dashboard.md

doc/user/application_security/container_scanning/index.md

doc/user/application_security/sast/index.md

...oject/repository/code_suggestions/supported_extensions.md