Correct documentation link for authorization engine example
This commit fixes the link for authorization engine example.
@@ -75,7 +75,7 @@ implementation.
Sample code that illustrates the structure and implementation of a custom
authorization engine is provided in the
-https://github.com/elastic/elasticsearch/tree/master/plugin/examples/security-example-authorization-engine[elasticsearch]
+https://github.com/elastic/elasticsearch/tree/master/plugins/examples/security-authorization-engine[elasticsearch]
repository on GitHub. You can use this code as a starting point for creating your
own authorization engine.
