message: Update ROADMAP.md
  Cooperating with this PR:
diff: @@ -43,7 +43,7 @@ Now follows an exhaustive list of every known Vim command that we could find.
  ## Custom commands
  * `gh` - show the hover tooltip.
  -* `gc` - add an additional cursor at the next place that matches `*`.
  +* `gb` - add an additional cursor at the next place that matches `*`.
  ## Left-right motions
  