bug#65049: Minor update to the repro steps

[Maxim Kim]

Steps in initial message were a bit incorrect, updated:

0. ./runemacs.exe -Q
1. navigate to a dirty git repo
2. C-x v D
3. Press C-x v v
4. Add commit message
5. Press C-c C-c

Sorry for initial misleading steps.

PS, this worked in 28.2 on the same Windows machine.