mention chunksize in ProcessPoolExecutor's buffersize docstring

Author: ebonnal

Lib/concurrent/futures/_base.py

@@ -588,7 +588,7 @@ def map(self, fn, *iterables, timeout=None, chunksize=1, buffersize=None):
                 ThreadPoolExecutor.
             buffersize: The maximum number of results that can be buffered
                 before being yielded. If the buffer is full, the iteration over
-                iterables is paused until an element is yielded from the
+                iterables is paused until a result is yielded from the
                 buffer.
 
         Returns:

Lib/concurrent/futures/process.py

@@ -824,9 +824,9 @@ def map(self, fn, *iterables, timeout=None, chunksize=1, buffersize=None):
             chunksize: If greater than one, the iterables will be chopped into
                 chunks of size chunksize and submitted to the process pool.
                 If set to one, the items in the list will be sent one at a time.
-            buffersize: The maximum number of results that can be buffered
+            buffersize: The maximum number of result chunks that can be buffered
                 before being yielded. If the buffer is full, the iteration over
-                iterables is paused until an element is yielded from the
+                iterables is paused until a result chunk is yielded from the
                 buffer.
 
         Returns: