Add step to check sync status of the node

docs/run-validator.md

@@ -208,10 +208,21 @@
 
   NOTE: This public key is required in next step to create validator
 
+- Check sync status of node:
+
+  ```bash
+  # Check sync status
+  laconic-so deployment --dir $DATA_DIRECTORY/$MAINNET_DEPLOYMENT_DIR exec laconicd "laconicd status | jq .sync_info"
+
+  # `catching_up: false` indicates that node is completely synced
+  ```
+
 ## Create Validator
 
 - Run these steps in a machine from where [the create-validator transaction is to be signed (machine 3)](#build-laconicd-to-create-validator)
 
+  NOTE: Make sure that your node has completed syncing
+
 - Copy the example variables file:
 
   ```bash