[Translation MR review follow up] Investigate variable placing / tag leak

follow up from thread:

• https://gitlab.com/gitlab-com/localization/tech-docs-forked-projects/prod/gitlab/-/merge_requests/104#note_2630432175
• https://gitlab.com/gitlab-com/localization/tech-docs-forked-projects/prod/gitlab/-/merge_requests/104#note_2630780021

file:

• doc-locale/ja-jp/user/application_security/sast/_index.md
• doc-locale/ja-jp/user/application_security/policies/pipeline_execution_policies.md