remove spurious brackets

docs/07-bootstrapping-etcd.md

@@ -28,19 +28,15 @@ wget -q --show-progress --https-only --timestamping \
 Extract and install the `etcd` server and the `etcdctl` command line utility:
 
 ```
-{
   tar -xvf etcd-v3.4.0-linux-amd64.tar.gz
   sudo mv etcd-v3.4.0-linux-amd64/etcd* /usr/local/bin/
-}
 ```
 
 ### Configure the etcd Server
 
 ```
-{
   sudo mkdir -p /etc/etcd /var/lib/etcd
   sudo cp ca.pem kubernetes-key.pem kubernetes.pem /etc/etcd/
-}
 ```
 
 The instance internal IP address will be used to serve client requests and communicate with etcd cluster peers. Retrieve the internal IP address for the current compute instance:
@@ -95,11 +91,9 @@ EOF
 ### Start the etcd Server
 
 ```
-{
   sudo systemctl daemon-reload
   sudo systemctl enable etcd
   sudo systemctl start etcd
-}
 ```
 
 > Remember to run the above commands on each controller node: `controller-0`, `controller-1`, and `controller-2`.