Update NodeType.java (#5108)

Co-authored-by: 吴晟 Wu Sheng <wu.sheng@foxmail.com>

oap-server/server-core/src/main/java/org/apache/skywalking/oap/server/core/analysis/NodeType.java

@@ -61,7 +61,7 @@ public enum NodeType {
      */
     User(10),
     /**
-     * <code>User = 11</code>
+     * <code>Unrecognized = 11</code>
      */
     Unrecognized(11);