strip accidental trailing whitespace to satisfy the linter

Author: karpathy

Doc/library/random.rst

@@ -78,7 +78,7 @@ Bookkeeping functions
    instead of the system time (see the :func:`os.urandom` function for details
    on availability).
 
-   If *a* is an int, it is used directly. Note that negative integer seeds are 
+   If *a* is an int, it is used directly. Note that negative integer seeds are
    treated as equivalent to their absolute value, so for example ``seed(-5)`` and
    ``seed(5)`` will produce identical sequences.