Authorizing via token throws 401

[dkoshman]

Likely due to string format bug in this line:

YaDiskClient/YaDiskClient/YaDiskClient.py

Line 66 in f2350b4

headers["Authorization"] = "OAuth %s".format(self.token)

Which results in literal string "OAuth %s". Probably need to change to
"OAuth %s" % self.token
or
f"OAuth {self.token}"