Python formatting

Author: smallp-o-p

libcxx/utils/generate_feature_test_macro_components.py

@@ -1005,7 +1005,7 @@ def add_version_header(tc):
                 "c++17": 201606,
                 "c++20": 202106,  # P2231R1 Missing constexpr in std::optional and std::variant
                 "c++23": 202110,  # P0798R8 Monadic operations for std::optional + LWG3621 Remove feature-test macro __cpp_lib_monadic_optional
-                "c++26": 202506   # P2988R12: std::optional<T&>
+                "c++26": 202506,  # P2988R12: std::optional<T&>
             },
             "headers": ["optional"],
         },