Update that support is for CPython EOL schedule

Author: vzhurba01

README.md

@@ -40,6 +40,6 @@ The list of available interfaces are:
 
 ## Supported Python Versions
 
-All `cuda-python` subpackages follows [NEP 29](https://numpy.org/neps/nep-0029-deprecation_policy.html) for supported Python version guarantee.
+All `cuda-python` subpackages follows CPython [End-Of-Life](https://devguide.python.org/versions/) schedule for supported Python version guarantee.
 
-Before dropping support, an issue will be raised for an advanced notice.
+Before dropping support there will be an issue raised as a notice.