message: update usage with more helpful descriptions
diff: -<Freestyle::Usage @name="CtaBlock" @description="A cta block, mainly used in the footer of a card.">
  +<Freestyle::Usage @name="CtaBlock">
  <:example>
  <Boxel::CtaBlock
  @stepNumber={{this.stepNumber}}
  />
  <Args.Number
  @name="stepNumber"
  - @description="If passed, will add the step number to the left of the block"
  + @description="If passed, will add the step number to the left of the block. Having a step number affects the padding of the block in the memorialized and disabled states."
  @optional={{true}}
  @value={{this.stepNumber}}
  @onInput={{fn (mut this.stepNumber)}}
  />
  <Args.Yield
  - @description="This block is shown when the action is done, and is uneditable. Kind of a 'status check'"
  + @name="default"
  + @description="The block shown when @state is 'default'. Yields { MainActionButton, InfoArea }"
  + />
  + <Args.Yield
  + @name="disabled"
  + @description="The block shown when @state is 'disabled'. Yields { MainActionButton }"
  + />
  + <Args.Yield
  + @name="in-progress"
  + @description="The block shown when @state is 'in-progress'. Yields { MainActionButton, CancelActionButton, InfoArea }"
  + />
  + <Args.Yield
  + @name="memorialized"
  + @description="The block shown when @state is 'memorialized'. Yields { MainActionButton, MainActionArea, InfoArea }"
  />
  </:api>
  </Freestyle::Usage>
  \ No newline at end of file
  