Update README.md

README.md

@@ -11,7 +11,7 @@ Databricks Spark Knowledge Base 简体中文
     * [执行 start-all.sh 错误: Connection refused](troubleshooting/port_22_connection_refused.md)
     * [Spark 组件之间的网络连接问题](troubleshooting/connectivity_issues.md)
 * [性能 & 优化](performance_optimization/README.md)
-    * [RDD 分区](performance_optimization/how_many_partitions_does_an_rdd_have.md)
+    * [一个 RDD 有多少个分区](performance_optimization/how_many_partitions_does_an_rdd_have.md)
     * [数据本地性](performance_optimization/data_locality.md)
 * [Spark Streaming](spark_streaming/README.md)
     * [ERROR OneForOneStrategy](spark_streaming/error_oneforonestrategy.md)