Embed_js returns invalid URL

[martn]

Calling get_embedjs_url returns //gp-gw/js/embed.js which is a non-sense.

Looking to the code of the method:

@property
def get_embedjs_url(self) -> str:
    return self.gopay.base_url[-4] + "/gp-gw/js/embed.js"

It probably should be changed to:

@property
def get_embedjs_url(self) -> str:
    return self.gopay.base_url[:-4] + "/gp-gw/js/embed.js"

[gopayprovoz]

Fixed by #17