bpo-43149: Correct the syntax error message for multiple exception types (GH-25996) GH-25997)

Automerge-Triggered-By: GH:pablogsal
(cherry picked from commit 6692dc1ca99fb34a19d0a4b93cf8e10619490001)

Co-authored-by: Pablo Galindo <Pablogsal@gmail.com>

Co-authored-by: Pablo Galindo <Pablogsal@gmail.com>
diff --git a/Parser/parser.c b/Parser/parser.c
index 6958963..2ca628b 100644
--- a/Parser/parser.c
+++ b/Parser/parser.c
@@ -19978,7 +19978,7 @@ invalid_except_stmt_rule(Parser *p)
         )
         {
             D(fprintf(stderr, "%*c+ invalid_except_stmt[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'except' expression ',' expressions ['as' NAME] ':'"));
-            _res = RAISE_SYNTAX_ERROR_STARTING_FROM ( a , "exception group must be parenthesized" );
+            _res = RAISE_SYNTAX_ERROR_STARTING_FROM ( a , "multiple exception types must be parenthesized" );
             if (_res == NULL && PyErr_Occurred()) {
                 p->error_indicator = 1;
                 D(p->level--);