Update cleanup-ttl-controller-deleted-objects.md (#1469)

In the Kyverno Documentation left menu, there is no way to distinguish the "Cleanup Controller Deleted Objects" from the "Cleanup TTL Controller Deleted Objects" as both are described as "Cleanup Controller Deleted Objects". This change would reflect in the left menu what is specific to the TTL controller.

Signed-off-by: François Duthilleul <francoisduthilleul@gmail.com>
Co-authored-by: shuting <shuting@nirmata.com>

content/en/docs/monitoring/cleanup-ttl-controller-deleted-objects.md

@@ -1,5 +1,5 @@
 ---
-title: Cleanup Controller Deleted Objects
+title: Cleanup TTL Controller Deleted Objects
 description: This metric can be used to track the number of objects deleted by the cleanup TTL controller.
 weight: 45
 ---