correct typo

Author: AstinCHOI

README.rst

@@ -61,7 +61,7 @@ Example
  print(response) # Maybe not 403
 
  # 2) Query string
- token = at.generateToken(acl="/akamai/authtoken")
+ token = at.generateToken(url="/akamai/authtoken")
  url = "http://{0}{1}?{2}={3}".format(AT_HOSTNAME, "/akamai/authtoken", at.token_name, token)
  response = requests.get(url)
  print(response)
@@ -143,7 +143,7 @@ Usage
  +----------------+---------------------------------------------------------------------------------------------------------+
  | start_time | |
  +----------------+ +
- | end_time | Same as Authtoken's parameters, but they overrides Authtoken's.  |
+ | end_time | Same as Authtoken's parameters, but they overrides Authtoken's. |
  +----------------+ +
  | window_seconds | |
  +----------------+---------------------------------------------------------------------------------------------------------+