[3.9] Fix typos in the Include directory (GH-28745)

Include/abstract.h

@@ -318,7 +318,7 @@ PyAPI_FUNC(int) PyObject_DelItem(PyObject *o, PyObject *key);
 
 /* Takes an arbitrary object which must support the (character, single segment)
    buffer interface and returns a pointer to a read-only memory location
-   useable as character based input for subsequent processing.
+   usable as character based input for subsequent processing.
 
    Return 0 on success.  buffer and buffer_len are only set in case no error
    occurs. Otherwise, -1 is returned and an exception set. */

Include/cpython/dictobject.h

@@ -26,7 +26,7 @@ typedef struct {
     /* If ma_values is NULL, the table is "combined": keys and values
        are stored in ma_keys.
 
-       If ma_values is not NULL, the table is splitted:
+       If ma_values is not NULL, the table is split:
        keys are stored in ma_keys and values are stored in ma_values */
     PyObject **ma_values;
 } PyDictObject;

Include/internal/pycore_traceback.h

@@ -51,7 +51,7 @@ PyAPI_FUNC(void) _Py_DumpTraceback(
    _PyGILState_GetInterpreterStateUnsafe() in last resort.
 
    It is better to pass NULL to interp and current_tstate, the function tries
-   different options to retrieve these informations.
+   different options to retrieve this information.
 
    This function is signal safe. */
 

Include/pytime.h

@@ -91,13 +91,13 @@ PyAPI_FUNC(_PyTime_t) _PyTime_FromNanoseconds(_PyTime_t ns);
 PyAPI_FUNC(int) _PyTime_FromNanosecondsObject(_PyTime_t *t,
     PyObject *obj);
 
-/* Convert a number of seconds (Python float or int) to a timetamp.
+/* Convert a number of seconds (Python float or int) to a timestamp.
    Raise an exception and return -1 on error, return 0 on success. */
 PyAPI_FUNC(int) _PyTime_FromSecondsObject(_PyTime_t *t,
     PyObject *obj,
     _PyTime_round_t round);
 
-/* Convert a number of milliseconds (Python float or int, 10^-3) to a timetamp.
+/* Convert a number of milliseconds (Python float or int, 10^-3) to a timestamp.
    Raise an exception and return -1 on error, return 0 on success. */
 PyAPI_FUNC(int) _PyTime_FromMillisecondsObject(_PyTime_t *t,
     PyObject *obj,