Update get-started.mdx (#22949)

Author: koaning

src/content/docs/r2/data-catalog/get-started.mdx

@@ -75,6 +75,8 @@ Then, enable the catalog on your chosen R2 bucket:
         npx wrangler r2 bucket catalog enable r2-data-catalog-tutorial
         ```
 
+When you run this command, take note of the "Warehouse" and "Catalog URI". You will need these later. 
+
 </TabItem>
 <TabItem label='Dashboard'>