add example request/response examples (#1120)

Author: ethanpalm

components/examples.mdx

@@ -15,6 +15,23 @@ Common use cases:
 
 On mobile devices, `<RequestExample>` and `<ResponseExample>` components display as regular code blocks and can be scrolled past.
 
+<RequestExample>
+
+```bash Request
+  curl --request POST \
+    --url https://dog-api.kinduff.com/api/facts
+```
+
+</RequestExample>
+
+<ResponseExample>
+
+```json Response
+{ "status": "success" }
+```
+
+</ResponseExample>
+
 ## RequestExample
 
 Use `<RequestExample>` to pins code examples in the right sidebar. This component works similarly to the [CodeGroup](/components/code-groups) component, but displays the code in the sidebar instead of inline.