Add missing space in if condition.

bin/v-add-letsencrypt-domain

@@ -114,7 +114,7 @@ else
 fi
 
 # Check if dns records exist for requested domain/aliases
-if [ "$proto" = "http-01"]; then
+if [ "$proto" = "http-01" ]; then
     for identifier in $(echo $domain,$aliases |tr ',' '\n' |sort -u); do
         if ! nslookup "${identifier}" >/dev/null 2>&1 ; then
             check_result $E_NOTEXIST "DNS record for $identifier doesn't exist"