Fix typo in Simplified Chinese translation (bookworm branch)
Fix a typo reported at https://lists.debian.org/debian-chinese-gb/2023/11/msg00000.html .
This Merge Request targets the bookworm branch. For the master branch, the same fix has been submitted on Weblate at https://hosted.weblate.org/translate/debian-installation-guide/installation-guide-partitioning/zh_Hans/?checksum=c76afa58f12635b2 awaiting automatic merge.