docs: Add url to deprecation notices

Author: mamoonraja

ibm_watson/personality_insights_v3.py

@@ -961,7 +961,7 @@ def __init__(
                array provides information inferred from the input text for the individual
                preferences of that category.
         """
-        print('warning: On 1 December 2021, Personality Insights will no longer be available. For more information, see the README.')
+        print('warning: On 1 December 2021, Personality Insights will no longer be available. For more information, see https://github.com/watson-developer-cloud/python-sdk/tree/master#personality-insights-deprecation.')
         self.processed_language = processed_language
         self.word_count = word_count
         self.word_count_message = word_count_message

ibm_watson/visual_recognition_v3.py

@@ -72,7 +72,7 @@ def __init__(
                Get up to date information from https://github.com/IBM/python-sdk-core/blob/master/README.md
                about initializing the authenticator of your choice.
         """
-        print('warning: On 1 December 2021, Visual Recognition will no longer be available. For more information, see the README.')
+        print('warning: On 1 December 2021, Visual Recognition will no longer be available. For more information, see https://github.com/watson-developer-cloud/python-sdk/tree/master#visual-recognition-deprecation.')
         if not authenticator:
             authenticator = get_authenticator_from_environment(service_name)
         BaseService.__init__(self,

ibm_watson/visual_recognition_v4.py

@@ -72,7 +72,7 @@ def __init__(
                Get up to date information from https://github.com/IBM/python-sdk-core/blob/master/README.md
                about initializing the authenticator of your choice.
         """
-        print('warning: On 1 December 2021, Visual Recognition will no longer be available. For more information, see the README.')
+        print('warning: On 1 December 2021, Visual Recognition will no longer be available. For more information, see https://github.com/watson-developer-cloud/python-sdk/tree/master#visual-recognition-deprecation.')
         if not authenticator:
             authenticator = get_authenticator_from_environment(service_name)
         BaseService.__init__(self,