Fix link to 3K users reference architecture

doc/administration/gitaly/index.md

@@ -174,7 +174,7 @@ The Gitaly configuration is noted by the architecture diagrams and the table of
 | ------------------------------------------------------------ | ------------------------------------------------------------ | -------------------------------------------- | ------------------------------- | ---------------------------------- | -------------------------------------- |
 | Up to 1000 Users                                             | [1K](../reference_architectures/1k_users.md)                 | Single Instance for all of GitLab            | Already Integrated as a Service | Local Disk                         | 0                                      |
 | Up to 2999 Users                                             | [2K](../reference_architectures/2k_users.md)                 | Horizontally Scaled GitLab Instance (Non-HA) | Single Gitaly Server            | Local Disk of Gitaly Instance      | 1                                      |
-| 3000 Users and Over                                          | [3K](../reference_architectures/1k_users.md)                 | Horizontally Scaled GitLab Instance with HA  | Gitaly Cluster                  | Local Disk of Each Gitaly Instance | 8                                      |
+| 3000 Users and Over                                          | [3K](../reference_architectures/3k_users.md)                 | Horizontally Scaled GitLab Instance with HA  | Gitaly Cluster                  | Local Disk of Each Gitaly Instance | 8                                      |
 | RTO/RPO Requirements for AZ Failure Tolerance Regardless of User Scale | [3K (with downscaling)](../reference_architectures/3k_users.md) | Custom (1)                      | Gitaly Cluster                  | Local Disk of Each Gitaly Instance | 8                                      |
 
 1. If you feel that you need AZ Failure Tolerance for user scaling lower than 3K, please contact Customer Success