Fix a typo in node garbage collection docs

Author: petr-muller

modules/nodes-nodes-garbage-collection-images.adoc

@@ -9,7 +9,7 @@
 
 Image garbage collection removes images that are not referenced by any running pods.
 
-{produt-title} determines which images to remove from a node based on the disk usage that is reported by *cAdvisor*.
+{product-title} determines which images to remove from a node based on the disk usage that is reported by *cAdvisor*.
 
 The policy for image garbage collection is based on two conditions: