Correct a lack of variable curly brackets

Author: PeterUpfold

charts/selenium-grid/certs/add-cert-helper.sh

@@ -75,7 +75,7 @@ for cert_file in "${cert_files[@]}"; do
   else
     echo "Processing $cert_file"
   fi
-  ALIAS="$ALIAS_PREFIX_$(basename $cert_file)"
+  ALIAS="${ALIAS_PREFIX}_$(basename $cert_file)"
   cert_file=$(append_private_key_if_exists $cert_file)
   for cert_db_file in "${cert_db_files[@]}"; do
     echo "Adding to db: $cert_db_file"