fix typo in userguide_3.0.md (#2770)

docs/userguide_3.0.md

@@ -270,7 +270,7 @@ spark.sql("select t1.id,t2.id from spark_catalog.default.t t1 left join tidb_cat
 | `spark.tispark.tikv.conn_recycle_time`          | `60s`            | The interval time of cleaning the expired connection with TiKV. Only take effect when enabling reloading certificates. The default is `60s` (60 seconds).                                                                                                                                                                                                                                                                                           |
 | `spark.tispark.host_mapping`                    | ``               | This is route map used to configure public IP and intranet IP mapping. When the TiDB cluster is running on the intranet, you can map a set of intranet IPs to public IPs for an outside Spark cluster to access. The format is `{Intranet IP1}:{Public IP1};{Intranet IP2}:{Public IP2}`, e.g. `192.168.0.2:8.8.8.8;192.168.0.3:9.9.9.9`.                                                                                                           |
 | `spark.tispark.new_collation_enable`            | ``               | When TiDB cluster enable [new collation](https://docs.pingcap.com/tidb/stable/character-set-and-collation#new-framework-for-collations), this configuration should be `true`, otherwise it should be `false`. If this item is not configured, TiSpark will configure automatically based on the TiDB version. The configuration rule is as follows: If the TiDB version is greater than or equal to v6.0.0, it is `true`; otherwise, it is `false`. |
-| `spark.tispark.replica_read`                    | leader           | Read data from specified role. The optional roles are leader, follower and learner. You can also specify multiple roles, and we will pick the roles you specify in order. See [here](.features/follower_read.md)for more detail                                                                                                                                                                                                                     |
+| `spark.tispark.replica_read`                    | leader           | Read data from specified role. The optional roles are leader, follower and learner. You can also specify multiple roles, and we will pick the roles you specify in order. See [here](features/follower_read.md) for more detail                                                                                                                                                                                                                     |
 | `spark.tispark.replica_read.label`              | ""               | Only select TiKV store match specified labels. Format: label_x=value_x,label_y=value_y                                                                                                                                                                                                                                                                                                                                                              |
 | `spark.tispark.replica_read.address_whitelist`  | ""               | Only select TiKV store with given ip addresses. Split mutil addresses by `,`                                                                                                                                                                                                                                                                                                                                                                        |
 | `spark.tispark.replica_read.address_blacklist`  | ""               | Do not select TiKV store with given ip addresses. Split mutil addresses by `,`                                                                                                                                                                                                                                                                                                                                                                      |