doc(typos): Correct typos by silly me

Author: ehdsouza

ibm_cloud_sdk_core/base_service.py

@@ -43,7 +43,7 @@ def __init__(self,
                  display_name=None):
         """
         :attr str url: The url for service api calls
-        :attr Athenticator authenticator: The authenticator for authentication
+        :attr Authenticator authenticator: The authenticator for authentication
         :attr bool disable_ssl_verification: enables/ disabled ssl verification
         :attr str display_name the name used for mapping services in environment file
         """

ibm_cloud_sdk_core/iam_token_manager.py

@@ -87,8 +87,6 @@ def set_client_id_and_secret(self, client_id, client_secret):
         This consists of the client_id and secret.
         These values are used to form the basic authorization header that
         is used when interacting with the IAM token server.
-        If these values are not supplied, then a default Authorization header
-        is used.
         """
         self.client_id = client_id
         self.client_secret = client_secret

ibm_cloud_sdk_core/utils.py

@@ -66,7 +66,7 @@ def get_authenticator_from_environment(service_name):
     if config:
         authenticator = contruct_authenticator(config)
 
-    # 3. From env variables
+    # 2. From env variables
     if not authenticator:
         config = read_from_env_variables(service_name)
         if config: