docs: fix reconiliation termination override snippet (#2946)

Signed-off-by: Attila Mészáros <[email protected]>

Author: csviri

docs/content/en/docs/getting-started/patterns-best-practices.md

@@ -112,8 +112,5 @@ The `stopOnInformerErrorDuringStartup` setting affects [cache sync timeout](http
 You can provide sufficient time for the reconciler to process and complete ongoing events before shutting down. Simply set an appropriate duration value for `reconciliationTerminationTimeout` using `ConfigurationServiceOverrider`.
 
 ```java
-final var overridden = new ConfigurationServiceOverrider(config)
-    .withReconciliationTerminationTimeout(Duration.ofSeconds(5));
-
-final var operator = new Operator(overridden);
+final var operator = new Operator(override -> override.withReconciliationTerminationTimeout(Duration.ofSeconds(5)));
 ```