PEP 782: Fix a minor typo (#4492)

* Fix a minor typo

* Update peps/pep-0782.rst

Co-authored-by: Adam Turner <[email protected]>

---------

Co-authored-by: Adam Turner <[email protected]>

Author: warsaw

peps/pep-0782.rst

@@ -53,8 +53,8 @@ When creating a bytes string and the output size is unknown, one
 strategy is to allocate a short buffer and extend it (to the exact size)
 each time a larger write is needed.
 
-This strategy is inefficient because it requires to enlarge the buffer
-multiple timess. It's more efficient to overallocate the buffer the
+This strategy is inefficient because it requires enlarging the buffer
+multiple times. It's more efficient to overallocate the buffer the
 first time that a larger write is needed. It reduces the number of
 expensive ``realloc()`` operations which can imply a memory copy.