Issue #14926: fix docstring highlight

Lib/random.py

@@ -96,7 +96,7 @@ class Random(_random.Random):
         None or no argument seeds from current time or from an operating
         system specific randomness source if available.
 
-        For version 2 (the default), all of the bits are used if *a *is a str,
+        For version 2 (the default), all of the bits are used if *a* is a str,
         bytes, or bytearray.  For version 1, the hash() of *a* is used instead.
 
         If *a* is an int, all bits are used.