fix syntax

Author: marcoieni

src/ci/docker/run.sh

@@ -282,7 +282,7 @@ else
     # LOCAL_USER_ID will map to a different subuid range on the host.
     # The "keep-id" mode maps the current UID directly into the container.
     args="$args --env NO_CHANGE_USER=1 --userns=keep-id"
-  else if [[ "$id" != 0 ]]; then
+  elif [[ "$id" != 0 ]]; then
     args="$args --env LOCAL_USER_ID=$id"
   else
     # If we're running as root, we don't want to run the container as root,