change Nodes title

Author: mletalie

_topic_maps/_topic_map_osd.yml

@@ -365,7 +365,7 @@ Topics:
     File: private-cluster
 - Name: Cluster autoscaling
   File: osd-cluster-autoscaling
-- Name: Nodes
+- Name: Managing compute nodes using machine pools
   Dir: osd_nodes
   Distros: openshift-dedicated
   Topics:

_topic_maps/_topic_map_rosa.yml

@@ -607,7 +607,7 @@ Topics:
 - Name: Cluster autoscaling for ROSA HCP
   File: rosa-cluster-autoscaling-hcp
   # Remove cluster autoscaling for ROSA HCP once the HCP docs are published
-- Name: Manage nodes using machine pools
+- Name: Managing compute nodes using machine pools
   Dir: rosa_nodes
   Distros: openshift-rosa
   Topics:

_topic_maps/_topic_map_rosa_hcp.yml

@@ -452,7 +452,7 @@ Topics:
     File: dedicated-aws-dc
 - Name: Cluster autoscaling
   File: rosa-cluster-autoscaling
-- Name: Manage nodes using machine pools
+- Name: Managing compute nodes using machine pools
   Dir: rosa_nodes
   Topics:
   - Name: About machine pools