[3.13] gh-82575: Adjust time.get_clock_info *adjustable* attribute doc (GH-135920) (#140098)

Co-authored-by: Stan Ulbrych <[email protected]>

Author: miss-islington

Doc/library/time.rst

@@ -238,8 +238,8 @@ Functions
 
    The result has the following attributes:
 
-   - *adjustable*: ``True`` if the clock can be changed automatically (e.g. by
-     a NTP daemon) or manually by the system administrator, ``False`` otherwise
+   - *adjustable*: ``True`` if the clock can be set to jump forward or backward
+     in time, ``False`` otherwise. Does not refer to gradual NTP rate adjustments.
    - *implementation*: The name of the underlying C function used to get
      the clock value.  Refer to :ref:`time-clock-id-constants` for possible values.
    - *monotonic*: ``True`` if the clock cannot go backward,