docs: restore section template comments in `ndarray/base/diagonal` and `ndarray/last`#11903

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kgryte merged 2 commits intodevelopfrom

philipp/fix-commit-review-2026-05-03

May 4, 2026

Commits on May 3, 2026

docs: add missing section template comments in `ndarray/base/diagonal`
claude
committed
docs: restore canonical intro section comment in `ndarray/last`
claude
committed