Update docs/cdk/how-to/migrate/7-8.md

Author: kmurphypolygon

docs/cdk/how-to/migrate/7-8.md

@@ -53,7 +53,7 @@ Follow the steps to verify all batches for upgrading.
 
 1. Start synchronizer's new version.
 
-2. Wait until synchornizer receives a fork id 8 event (check table `state.fork_id`).
+2. Wait until synchornizer receives a fork id event (check table `state.fork_id`).
 
 3. Edit node config file (node v0.6.2 version):