Apply suggestions from code review

Co-authored-by: Victor Stinner <vstinner@python.org>

Author: ZeroIntensity

Lib/test/test_readline.py

@@ -117,7 +117,7 @@ def test_write_read_append(self):
         with self.assertRaises(ValueError):
             readline.append_history_file(-42, hfilename)
 
-        # See gh-122431, using the minumum signed integer value caused a segfault
+        # See gh-122431, using the minimum signed integer value caused a segfault
         with self.assertRaises(ValueError):
             readline.append_history_file(-2147483648, hfilename)
 

Modules/readline.c

@@ -353,7 +353,7 @@ readline_append_history_file_impl(PyObject *module, int nelements,
 {
     if (nelements < 0)
     {
-        PyErr_SetString(PyExc_ValueError, "nelements cannot be negative");
+        PyErr_SetString(PyExc_ValueError, "nelements must be positive");
         return NULL;
     }