Add link to tidb_max_auto_analyze_time system variables (#8937) (#8956

)

releases/release-6.1.0.md

@@ -115,7 +115,7 @@ In 6.1.0, the key new features or improvements are as follows:
 
     Databases can effectively understand the distribution of data by collecting statistics, which helps generate reasonable execution plans and improve the efficiency of SQL execution. TiDB regularly collects statistics on frequently changed data objects in the background. However, collecting statistics takes up cluster resources and might affect the stable operation of the business during business peaks.
 
-    Starting from v6.1.0, TiDB introduces `tidb_max_auto_analyze_time` to control the maximum execution time for background statistics collection, which is 12 hours by default. When the application does not encounter a resource bottleneck, it is recommended not to modify this variable so that TiDB can timely collect statistics.
+    Starting from v6.1.0, TiDB introduces [`tidb_max_auto_analyze_time`](/system-variables.md#tidb_max_auto_analyze_time-new-in-v610) to control the maximum execution time for background statistics collection, which is 12 hours by default. When the application does not encounter a resource bottleneck, it is recommended not to modify this variable so that TiDB can timely collect statistics.
 
     [User document](/system-variables.md)