fix typo in readme
fix typo in readme

MJ-Ghorbanalibeik/sms_sender_cbf,MJ-Ghorbanalibeik/sms_sender_cbf,MJ-Ghorbanalibeik/sms_sender_ots,MJ-Ghorbanalibeik/sms_sender_ots,MJ-Ghorbanalibeik/sms_sender_cbf,MJ-Ghorbanalibeik/sms_sender_smsgw,MJ-Ghorbanalibeik/sms_sender_smsgw,MJ-Ghorbanalibeik/sms_sender_smsgw,MJ-Ghorbanalibeik/sms_sender_ots