fixing doc links(#1419)

rotarymars · rotarymars · commit cf0bc4e9eb43 · 2025-12-26T18:09:46.000+09:00
diff --git a/reference/contracts/assertion_kind.md b/reference/contracts/assertion_kind.md
@@ -34,4 +34,4 @@ namespace std::contracts {
 - [契約プログラミング](/lang/cpp26/contracts.md)
 
 ## 参照
-- [P0542R5 Support for contract based programming in C++](http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0542r5.html)
+- [P2900R14 Contracts for C++](https://open-std.org/jtc1/sc22/wg21/docs/papers/2025/p2900r14.pdf)
diff --git a/reference/contracts/detection_mode.md b/reference/contracts/detection_mode.md
@@ -37,4 +37,4 @@ namespace std::contracts {
 - [契約プログラミング](/lang/cpp26/contracts.md)
 
 ## 参照
-- [P0542R5 Support for contract based programming in C++](http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0542r5.html)
+- [P2900R14 Contracts for C++](https://open-std.org/jtc1/sc22/wg21/docs/papers/2025/p2900r14.pdf)
