message: link to Block and Flex props changes
diff: @@ -21,6 +21,10 @@ This release also introduces early support for [theming](#theming).
  * [Some typography props](#typography-props) will require refactoring.
  +* [Some `Block` props](#block-props) have changed.
  +
  +* [Some `FlexContainer` and `FlexItem` props](#flex-props) have changed.
  +
  ### Theming
  Theming is an optional way to override the values that control color, spacing, typography, and other aspects of our components.
  @@ -133,7 +137,7 @@ The following table lists typography-related prop substitutions:
  | `nowrap` | (boolean) | `css="white-space: nowrap"` |
  -### `<Block>` props
  +### `Block` props
  | Prop | Value(s) | Substitute |
  | :--- | :------- | :--------- |
  | `border` | `true` | `border={1}` |
  @@ -147,14 +151,14 @@ Note: array values in border props represent [responsive values].
  ### Flex props
  -#### `<FlexContainer>`
  +#### `FlexContainer`
  | Prop | Value(s) | Substitute |
  | :--- | :------- | :--------- |
  | `direction` | _all_ | `flexDirection="css-value"` |
  | `wrap` | `wrap`, `nowrap` | `flexWrap="css-value"` |
  | `inline` | (boolean) | `display="inline-flex"` |
  -#### `<FlexItem>`
  +#### `FlexItem`
  | Prop | Value(s) | Substitute |
  | :--- | :------- | :--------- |
  | `flexAuto` | (boolean) | No longer supported |
  