fix(docs): CardHeader in Basic usage in docs

Author: boilund

packages/docs/src/mdx/coreComponents/Card.mdx

@@ -424,7 +424,9 @@ export const onClick = () => {}
 
 ```typescript type=live
 <Card>
-  <CardHeader header="Normal height header" height="normal" />
+  <CardHeader>
+    <CardHeaderTypography>CardHeader</CardHeaderTypography>
+  </CardHeader>
   <CardContent>
     <Typography>CardContent</Typography>
   </CardContent>