I copied survey link in email template instead of this ----> {SURVEYLIKN}, so it did not geenrate tokens.
Now I have to resend to those participants email reminders with right link, how do i do it? 
Must I change {SURVEYLINK} this with link itself or does limesuvey generate the link with the token itself?

So resend the invitation with {SURVEYURL}
I think you talk about this, not {SURVEYLINK}
{SURVEYURL} contains the token.
But these are things you should have tested alrteady with your own email.

Well:
Edit the participants, set the "Invitation sent" to "No".
Edit the invitation email, where you explain the mistake.
And send the invitations again.

Joffm