types: fix nvme_reachability_association_desc member variable name

Since the ngid variable name should be as rgid correctly.

Signed-off-by: Tokunori Ikegami <ikegami.t@gmail.com>

Author: ikegami-t

src/nvme/types.h

@@ -5065,15 +5065,15 @@ struct nvme_reachability_groups_log {
  * @chngc:	Change Count
  * @rac:	Reachability Association Characteristics
  * @rsvd17:	Reserved
- * @ngid:	Reachability Group Identifier List
+ * @rgid:	Reachability Group Identifier List
  */
 struct nvme_reachability_association_desc {
 	__le32	rasid;
 	__le32	nrid;
 	__le64	chngc;
 	__u8	rac;
 	__u8	rsvd17[15];
-	__le32	ngid[];
+	__le32	rgid[];
 };
 
 /**