message: docs: Improve spacer docs
  Making a little change to pass semantic pull request check
diff: @@ -76,7 +76,7 @@ stackable and responsive layouts.
  The `Flex` and `Spacer` components, `Grid` and `HStack` treat children of different
  widths differently. In `HStack`, the children will have equal spacing between them
  but they won't span the entire width of the container. In `Grid`, the starting points
  -of the children will be equally spaced but the spaces between the children will
  +of the children will be equally spaced but the gaps between the children will
  be different. With `Flex` and `Spacer`, the children will span the entire width
  of the container and also have equal spacing between them.
  