fix hardcoded button text

[JuliaNeumann]

Hi @tareq1988, first of all, many thanks for this really nice, flexible component and also your vue wp plugin starter, they have both helped me a lot in developing wp plugins! Really good stuff :+1: I only found this little issue here where one of the button texts is hardcoded which gets a bit in the way when using this in a non-English context, would be awesome if this fix could be merged and published. Once again, many thanks!