add “Vim” so people know that this is only for Vim, if they got here by search
the extra hyphens make parsing the sentence a bit easier
Add period to make the sentence grammatical. I don’t think anyone will accidentally include the period in the command they type, since the command is formatted differently.
Warn about issue #1, that Bisectly won’t work on gVim, so people don’t waste their time trying it in gVim.