Remove .md from help_page_links (step 2)

.haml-lint_todo.yml

app/helpers/clusters_helper.rb

app/helpers/environments_helper.rb

app/helpers/ide_helper.rb

app/helpers/merge_requests_helper.rb

app/helpers/operations_helper.rb

app/helpers/preferences_helper.rb

app/helpers/projects_helper.rb

app/presenters/clusters/cluster_presenter.rb

app/serializers/issue_entity.rb

app/serializers/merge_request_noteable_entity.rb

app/serializers/merge_request_widget_entity.rb

app/services/projects/update_service.rb

app/views/admin/application_settings/_email.html.haml

...iews/admin/application_settings/_error_tracking.html.haml

app/views/admin/application_settings/_floc.html.haml

...ication_settings/_gitlab_shell_operation_limits.html.haml

app/views/admin/application_settings/_localization.html.haml

...admin/application_settings/_projects_api_limits.html.haml

...in/application_settings/_runner_registrars_form.html.haml