minor fix for handling unsupported opt in script

net/init-metrics.sh

@@ -30,9 +30,9 @@ useEnv=false
 delete=false
 createWithoutConfig=false
 host="https://internal-metrics.solana.com:8086"
-while getopts "hdec:" opt; do
+while getopts ":hdec:" opt; do
   case $opt in
-  h|\?)
+  h)
     usage
     exit 0
     ;;
@@ -47,7 +47,7 @@ while getopts "hdec:" opt; do
     useEnv=true
     ;;
   *)
-    usage "unhandled option: $opt"
+    usage "unhandled option: $OPTARG"
     ;;
   esac
 done