Rename the obsolete term TOST/Trellis with SD-Fabric

Change-Id: I27602bb9004f409f1e64b568a30c84d09f5b958f
diff --git a/edge_deployment/connectivity_service_update.rst b/edge_deployment/connectivity_service_update.rst
index 3194b37..fca62fd 100644
--- a/edge_deployment/connectivity_service_update.rst
+++ b/edge_deployment/connectivity_service_update.rst
@@ -5,7 +5,7 @@
 ===========================
 Connectivity Control Update
 ===========================
-At this point, Aether runtime and TOST should be ready.
+At this point, Aether runtime and SD-Fabric should be ready.
 But in order to make Aether connectivity control to serve the new ACE,
 we need to create another patch to `aether-pod-configs` repository and update `omec-control-plane`.