correction ldapadd

HowtoOpenLDAP.md

@@ -245,7 +245,7 @@ $ cat add.ldif
 dn: ou=test,dc=example,dc=com
 ou: test
 objectClass: 
-$ ldapadd [-h <hostname>] -D uid=xxx,ou=xxx,dc=evolix,cd=net --add --in add.ldif
+$ ldapadd [-h <hostname>] -D uid=xxx,ou=xxx,dc=evolix,dc=net -f add.ldif -W
 add: 1, rename: 0, modify: 0, delete: 0
 Action? [yYqQvVebB*rsf+?] y
 Done.