update MD by dispatch event pingcap/docs release-8.5

Author: github-actions

markdown-pages/en/tidb/release-8.5/system-variables.md

@@ -5454,14 +5454,30 @@ SHOW WARNINGS;
 
 ### tidb_replica_read <span class="version-mark">New in v4.0</span>
 
+<CustomContent platform="tidb-cloud" plan="starter,essential">
+
+> **Note:**
+>
+> This variable is read-only for [TiDB Cloud Starter](https://docs.pingcap.com/tidbcloud/select-cluster-tier#starter) and [TiDB Cloud Essential](https://docs.pingcap.com/tidbcloud/select-cluster-tier#essential).
+
+</CustomContent>
+
+<CustomContent platform="tidb-cloud" plan="premium">
+
+> **Note:**
+>
+> This variable is read-only for [TiDB Cloud Premium](https://docs-preview.pingcap.com/tidbcloud/tidb-cloud-intro/#deployment-options).
+
+</CustomContent>
+
 - Scope: SESSION | GLOBAL
 - Persists to cluster: Yes
 - Applies to hint [SET_VAR](/optimizer-hints.md#set_varvar_namevar_value): Yes
 - Type: Enumeration
 - Default value: `leader`
 - Possible values: `leader`, `follower`, `leader-and-follower`, `prefer-leader`, `closest-replicas`, `closest-adaptive`, and `learner`. The `learner` value is introduced in v6.6.0.
 - This variable is used to control where TiDB reads data. Starting from v8.5.4, this variable only takes effect on read-only SQL statements.
-- For more details about usage and implementation, see [Follower read](/follower-read.md).
+- For more details about usage and implementation, see [Follower Read](/follower-read.md).
 
 ### tidb_restricted_read_only <span class="version-mark">New in v5.2.0</span>
 

markdown-pages/en/tidbcloud/master/system-variables.md

@@ -5454,14 +5454,30 @@ SHOW WARNINGS;
 
 ### tidb_replica_read <span class="version-mark">New in v4.0</span>
 
+<CustomContent platform="tidb-cloud" plan="starter,essential">
+
+> **Note:**
+>
+> This variable is read-only for [TiDB Cloud Starter](https://docs.pingcap.com/tidbcloud/select-cluster-tier#starter) and [TiDB Cloud Essential](https://docs.pingcap.com/tidbcloud/select-cluster-tier#essential).
+
+</CustomContent>
+
+<CustomContent platform="tidb-cloud" plan="premium">
+
+> **Note:**
+>
+> This variable is read-only for [TiDB Cloud Premium](https://docs-preview.pingcap.com/tidbcloud/tidb-cloud-intro/#deployment-options).
+
+</CustomContent>
+
 - Scope: SESSION | GLOBAL
 - Persists to cluster: Yes
 - Applies to hint [SET_VAR](/optimizer-hints.md#set_varvar_namevar_value): Yes
 - Type: Enumeration
 - Default value: `leader`
 - Possible values: `leader`, `follower`, `leader-and-follower`, `prefer-leader`, `closest-replicas`, `closest-adaptive`, and `learner`. The `learner` value is introduced in v6.6.0.
 - This variable is used to control where TiDB reads data. Starting from v8.5.4, this variable only takes effect on read-only SQL statements.
-- For more details about usage and implementation, see [Follower read](/follower-read.md).
+- For more details about usage and implementation, see [Follower Read](/follower-read.md).
 
 ### tidb_restricted_read_only <span class="version-mark">New in v5.2.0</span>
 

markdown-pages/en/tidbcloud/master/tidb-cloud/limited-sql-features.md

@@ -177,6 +177,7 @@ TiDB Cloud works with almost all workloads that TiDB supports, but there are som
 | `tidb_pprof_sql_cpu` | Not supported [^4] | Not supported [^4] |
 | `tidb_record_plan_in_slow_log` | Not supported [^4] | Not supported [^4] |
 | `tidb_redact_log` | Not supported [^4] | Not supported [^4] |
+| `tidb_replica_read` | No limitation | Read-only [^10] |
 | `tidb_restricted_read_only` | Not supported [^4] | Not supported [^4] |
 | `tidb_row_format_version` | Not supported [^4] | Not supported [^4] |
 | `tidb_scatter_region` | No limitation | Read-only [^10] |