Fix span component type (#552)

Mistyped when added type to components.

packages/react-sdk/src/components/span.ws.tsx

@@ -3,7 +3,7 @@ import type { WsComponentMeta, MetaProps } from "./component-type";
 import props from "./__generated__/span.props.json";
 
 const meta: WsComponentMeta = {
-  type: "rich-text",
+  type: "rich-text-child",
   label: "Styled Text",
   Icon: BrushIcon,
   props: props as MetaProps,