Fix TCM migration doc

Author: p7nov

doc/tooling/tcm/_images/tcm_ui_cluster_migrations.png

@@ -40,7 +40,6 @@ to read data. LDAP authorization is supported as well.
     tcm_connect_clusters
     tcm_cluster_management/index
     tcm_cluster_data_access
-    tcm_cluster_migrations
     tcm_access_control/index
     tcm_audit_log
     tcm_configuration

doc/tooling/tcm/index.rst

@@ -18,4 +18,5 @@ to learn how to perform various management operations on Tarantool clusters from
     tcm_cluster_config
     tcm_cluster_users
     tcm_cluster_metrics
-    tcm_supervised_failover
+    tcm_supervised_failover
+    tcm_cluster_migrations

doc/tooling/tcm/tcm_cluster_management/index.rst

@@ -172,6 +172,20 @@ sent to this centralized storage.
 
 Learn more in :ref:`tcm_configuring_clusters`.
 
+..  _tcm_ui_cluster_migrations:
+
+Migrations
+~~~~~~~~~~
+
+The **Migrations** page provides centralized migration management tools for the selected cluster.
+
+.. image:: _images/tcm_ui_cluster_migrations.png
+    :align: left
+    :width: 700
+    :alt: TCM cluster migrations page
+
+Learn more in :ref:`tcm_cluster_migrations`.
+
 ..  _tcm_ui_cluster_tuples:
 
 Tuples