Documentation: Fix sysfs path for the NFSv4 client identifier

The sysfs path for the NFS4 client identfier should start with
the path component of 'nfs' for the kset, and then the 'net'
path component for the netns object, followed by the
'nfs_client' path component for the NFS client kobject,
and ending with 'identifier' for the netns_client_id
kobj_attribute.

Fixes: a28faad ("Documentation: Add an explanation of NFSv4 client identifiers")
Link: https://bugzilla.redhat.com/show_bug.cgi?id=1801326
Reviewed-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>

Author: DaveWysochanskiRH

Documentation/filesystems/nfs/client-identifier.rst

@@ -152,7 +152,7 @@ string:
       via the kernel command line, or when the "nfs" module is
       loaded.
 
-    /sys/fs/nfs/client/net/identifier
+    /sys/fs/nfs/net/nfs_client/identifier
       This virtual file, available since Linux 5.3, is local to the
       network namespace in which it is accessed and so can provide
       distinction between network namespaces (containers) when the
@@ -164,7 +164,7 @@ then that uniquifier can be used. For example, a uniquifier might
 be formed at boot using the container's internal identifier:
 
     sha256sum /etc/machine-id | awk '{print $1}' \\
-        > /sys/fs/nfs/client/net/identifier
+        > /sys/fs/nfs/net/nfs_client/identifier
 
 Security considerations
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