Updated README.md to correct INSTANCE_ID retrieval, along with incorporating a proper command for restarting the node

Signed-off-by: racket2000 <[email protected]>

Author: racket2000

lib/solana/README.md

@@ -242,10 +242,9 @@ cdk destroy solana-common
 pwd
 # Make sure you are in aws-blockchain-node-runners/lib/solana
 
-export INSTANCE_ID=$(cat single-node-deploy.json | jq -r '..|.node-instance-id? | select(. != null)')
+export INSTANCE_ID=$(cat single-node-deploy.json | jq -r '..|.nodeinstanceid? | select(. != null)')
 echo "INSTANCE_ID=" $INSTANCE_ID
 aws ssm start-session --target $INSTANCE_ID --region $AWS_REGION
-sudo su bcuser
 sudo journalctl -o cat -fu node
 ```
 
@@ -255,17 +254,18 @@ sudo journalctl -o cat -fu node
 pwd
 # Make sure you are in aws-blockchain-node-runners/lib/solana
 
-export INSTANCE_ID=$(cat single-node-deploy.json | jq -r '..|.node-instance-id? | select(. != null)')
+export INSTANCE_ID=$(cat single-node-deploy.json | jq -r '..|.nodeinstanceid? | select(. != null)')
 echo "INSTANCE_ID=" $INSTANCE_ID
 aws ssm start-session --target $INSTANCE_ID --region $AWS_REGION
 sudo cat /var/log/cloud-init-output.log
 ```
 
 3. How can I restart the Solana service?
 ``` bash
-export INSTANCE_ID=$(cat single-node-deploy.json | jq -r '..|.node-instance-id? | select(. != null)')
+export INSTANCE_ID=$(cat single-node-deploy.json | jq -r '..|.nodeinstanceid? | select(. != null)')
 echo "INSTANCE_ID=" $INSTANCE_ID
 aws ssm start-session --target $INSTANCE_ID --region $AWS_REGION
+sudo systemctl restart node
 sudo systemctl status node
 ```