fix(docs): correct zh locale link in composer-edit-range note
The static gate (translation pairing) failed on a pre-existing master note:
2026-08-20-composer-edit-range-from-selection.zh.md:17 linked the zh target with
the en .md path. Point it at the .zh.md target and re-record the i18n hash. This
unblocks the required node 24 / static gate (it is not part of the python-release
gray-check change but sits on the same PR's CI path).