Merge pull request #45405 from xenolinux/remove-a

No_bug_assigned: Remove an extra 'a'

Author: mburke5678

updating/updating-cluster-within-minor.adoc

@@ -6,7 +6,7 @@ include::_attributes/common-attributes.adoc[]
 
 toc::[]
 
-You can update, or upgrade, an {product-title} cluster by using the web console. The following steps are updating a cluster within a minor a version. You can use the same instructions for updating a cluster between minor versions.
+You can update, or upgrade, an {product-title} cluster by using the web console. The following steps update a cluster within a minor version. You can use the same instructions for updating a cluster between minor versions.
 
 [NOTE]
 ====