fix script

bin/create_apps_json.sh

@@ -37,7 +37,7 @@ for app in apps/*/; do
 done
 echo "]" >> "$outfile"
 
-if [ -z "$1"]; then
+if [ -z "$1" ]; then
   # Running with no arguments: prevent accidental commit of modified apps.json.
   # You can use `create_apps.json.sh apps.json` if you really want to both
   # overwrite and still commit apps.json
@@ -45,4 +45,4 @@ if [ -z "$1"]; then
   echo "Told git to ignore modified apps.json."
   # If you want to unignore it, use
   #   'git update-index --no-skip-worktree apps.json'
-fi
+fi