Update functional.rst

Co-authored-by: Peter Bierma <[email protected]>

Author: cdenihan

Doc/howto/functional.rst

@@ -602,7 +602,7 @@ generators:
   raise an exception inside the generator; the exception is raised by the
   ``yield`` expression where the generator's execution is paused.
 
-* :meth:`~generator.close` sends a :exc:`GeneratorExit` exception inside the
+* :meth:`~generator.close` sends a :exc:`GeneratorExit` exception to the
   generator to terminate the iteration.  On receiving this exception, the
   generator's code must either raise :exc:`GeneratorExit` or
   :exc:`StopIteration`; catching the exception and doing anything else is