Incorrect SMS sent to Mom on Clinic line

JIRA Ref: https://praekelt.atlassian.net/browse/NDOH-76

SMS copy currently: "Congratulations on your pregnancy. You will now get free SMSs about MomConnect. You can register for the full set of FREE helpful messages at a clinic."

Correct copy is: "Welcome to MomConnect. For more info or to log a complaint or compliment, please dial *134*550#. If you ever want to stop getting SMSs dial *134*550*1#"
This should be `$` wrapped and context added for dial in lines I think