Fix typos mostly in comments, docs and test names (GH-15209)
diff --git a/Python/ast.c b/Python/ast.c
index 8b3dbea..1152402 100644
--- a/Python/ast.c
+++ b/Python/ast.c
@@ -5356,7 +5356,7 @@
doubling the number allocated each time. Note that the f-string
f'{0}a{1}' contains 3 expr_ty's: 2 FormattedValue's, and one
Constant for the literal 'a'. So you add expr_ty's about twice as
- fast as you add exressions in an f-string. */
+ fast as you add expressions in an f-string. */
Py_ssize_t allocated; /* Number we've allocated. */
Py_ssize_t size; /* Number we've used. */