i18n-ru: fix patchbomb confirmation prompt (
issue3929)
Recognize y(es) and (n)o as valid input, for user not to have to switch
keyboard layout twice (`hg email -o ...` is Latin, whereas д(а)/н(ет) are not).
Use capital Y/N letters in prompt, otherwise y could be mistaken for у, and n
- for п.
help: fix role/option confusion in RST
RST's role syntax means something different sometimes when it's in
some places that are poorly documented and vary betwen minirst and
docutils. Line wrapping will thus sometimes break everything.