chore(create-operator.sh): polish create-operator.sh
diff --git a/create-operator.sh b/create-operator.sh
index 4653d24..0980632 100755
--- a/create-operator.sh
+++ b/create-operator.sh
@@ -24,8 +24,9 @@
 
 export GO111MODULE=on
 
+# Download rocketmq.zip for the Admin Tool if it does not exist
 if [ ! -e build/rocketmq.zip ]; then
-  curl https://dist.apache.org/repos/dist/release/rocketmq/${ROCKETMQ_VERSION}/rocketmq-all-${ROCKETMQ_VERSION}-bin-release.zip -o rocketmq.zip;
+  curl https://dist.apache.org/repos/dist/release/rocketmq/${ROCKETMQ_VERSION}/rocketmq-all-${ROCKETMQ_VERSION}-bin-release.zip -o rocketmq.zip
   mv rocketmq.zip build
 fi