Update storage-persistent-storage-reclaim-manual.adoc

- one variable needs to be updated with underscores instead of hyphens.
- Here is the documentation:
https://docs.redhat.com/en/documentation/openshift_container_platform/4.16/html/storage/understanding-persistent-storage#reclaim-manual_understanding-persistent-storage

Here is the current documentation:

1. Delete the PV.

$ oc delete pv <pv-name>
Here `<pv-name> ` is mentioned with `underscores`.
But as per the standard format, it should be with `hyphens`.
Also, `full stop` is mentioned after `Delete the PV.`, but `colon` ( is required here.
Here is the updated look:

1. Delete the PV:
~~~
$ oc delete pv <pv_name>
~~~

New-Update modules/storage-persistent-storage-reclaim-manual.adoc

Here is the current documentation:

1. Delete the PV.
~~~
$ oc delete pv <pv-name>
~~~

- Here `<pv-name> ` is mentioned with `hyphens`.
- But as per the standard format, it should be with `underscores`.
- Also, `full stop` is mentioned after `Delete the PV.`, but `colon` (:) is required here.

Here is the updated look:

1. Delete the PV by running the following command:
~~~
$ oc delete pv <pv_name>
~~~

Co-authored-by: Ashleigh Brennan <abrennan@redhat.com>

Author: 2 people

modules/storage-persistent-storage-reclaim-manual.adoc

@@ -19,11 +19,11 @@ endif::[]
 .Procedure
 To manually reclaim the PV as a cluster administrator:
 
-. Delete the PV.
+. Delete the PV by running the following command:
 +
 [source,terminal]
 ----
-$ oc delete pv <pv-name>
+$ oc delete pv <pv_name>
 ----
 +
 ifndef::openshift-dedicated,openshift-rosa[]