K8SPSMDB-1160 Disable PVC resize in the cr.yaml example (#1718)

Co-authored-by: Viacheslav Sarzhan <slava.sarzhan@percona.com>

Author: fiowro

deploy/cr.yaml

@@ -12,7 +12,7 @@ spec:
 #  clusterServiceDNSMode: "Internal"
 #  pause: true
 #  unmanaged: false
-#  enableVolumeExpansion: true
+#  enableVolumeExpansion: false
   crVersion: 1.19.0
   image: perconalab/percona-server-mongodb-operator:main-mongod7.0
   imagePullPolicy: Always