RenderableProps component prop should still be given T (#124)

Author: ForbesLindesay

src/index.d.ts

@@ -56,7 +56,7 @@ export interface FormSpyRenderProps extends FormState, SubsetFormApi {}
 
 export interface RenderableProps<T> {
   children?: ((props: T) => React.ReactNode) | React.ReactNode
-  component?: React.ComponentType<FieldRenderProps> | string
+  component?: React.ComponentType<T> | string
   render?: (props: T) => React.ReactNode
 }