Add auth headers to examples on best-practices-for-using-the-rest-api.md (#55509)

Author: jyetheitguy

content/rest/using-the-rest-api/best-practices-for-using-the-rest-api.md

@@ -69,18 +69,18 @@ Similarly, you should not try to manually construct pagination queries. Instead,
 
 ## Use conditional requests if appropriate
 
-Most endpoints return an `etag` header, and many endpoints return a `last-modified` header. You can use the values of these headers to make conditional `GET` requests. If the response has not changed, you will receive a `304 Not Modified` response. Making a conditional request does not count against your primary rate limit if a `304` response is returned.
+Most endpoints return an `etag` header, and many endpoints return a `last-modified` header. You can use the values of these headers to make conditional `GET` requests. If the response has not changed, you will receive a `304 Not Modified` response. Making a conditional request does not count against your primary rate limit if a `304` response is returned and the request was made while correctly authorized with an `Authorization` header.
 
 For example, if a previous request returned an `etag` header value of `644b5b0155e6404a9cc4bd9d8b1ae730`, you can use the `if-none-match` header in a future request:
 
 ```shell
-curl {% data variables.product.rest_url %}/meta --include --header 'if-none-match: "644b5b0155e6404a9cc4bd9d8b1ae730"'
+curl -H "Authorization: Bearer YOUR-TOKEN" {% data variables.product.rest_url %}/meta --include --header 'if-none-match: "644b5b0155e6404a9cc4bd9d8b1ae730"'
 ```
 
 For example, if a previous request returned a `last-modified` header value of `Wed, 25 Oct 2023 19:17:59 GMT`, you can use the `if-modified-since` header in a future request:
 
 ```shell
-curl {% data variables.product.rest_url %}/repos/github/docs --include --header 'if-modified-since: Wed, 25 Oct 2023 19:17:59 GMT'
+curl -H "Authorization: Bearer YOUR-TOKEN" {% data variables.product.rest_url %}/repos/github/docs --include --header 'if-modified-since: Wed, 25 Oct 2023 19:17:59 GMT'
 ```
 
 Conditional requests for unsafe methods, such as `POST`, `PUT`, `PATCH`, and `DELETE` are not supported unless otherwise noted in the documentation for a specific endpoint.