Update 9.upgrade-nebula-cluster.md

vesoft-inc · Nov 10, 2021 · e7f152c · e7f152c
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diff --git a/docs-2.0/nebula-operator/9.upgrade-nebula-cluster.md b/docs-2.0/nebula-operator/9.upgrade-nebula-cluster.md
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 # 升级Nebula Graph集群
 
-本文介绍如何升级Nebula Graph集群。
+Nebula Operator支持升级Nebula Graph集群。本文介绍如何升级Nebula Graph集群。
 
 ## 前提条件