Update peps/pep-0782.rst

Co-authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com>

Author: vstinner

peps/pep-0782.rst

@@ -15,7 +15,7 @@ Post-History:
 Abstract
 ========
 
-Add a new ``PyBytesWriter`` C API to create ``bytes`` object.
+Add a new ``PyBytesWriter`` C API to create ``bytes`` objects.
 
 It replaces the ``PyBytes_FromStringAndSize(NULL, size)`` and
 ``_PyBytes_Resize()`` APIs which treat an immutable ``bytes`` object as