Fix a bunch of typos in documentation, docstrings and comments.
(From SF patch #810751)
diff --git a/Include/abstract.h b/Include/abstract.h
index 9f8b4aa..46aee29 100644
--- a/Include/abstract.h
+++ b/Include/abstract.h
@@ -872,7 +872,7 @@
PyAPI_FUNC(PyObject *) PyNumber_InPlaceOr(PyObject *o1, PyObject *o2);
/*
- Returns the result of bitwise or or o1 and o2, possibly in-place,
+ Returns the result of bitwise or of o1 and o2, possibly in-place,
or null on failure. This is the equivalent of the Python
expression: o1 |= o2.