test: [doc] Manually unify stale headers

test/functional/mining_template_verification.py

@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-# Copyright (c) 2024-Present The Bitcoin Core developers
+# Copyright (c) 2024-present The Bitcoin Core developers
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 """Test getblocktemplate RPC in proposal mode

test/functional/p2p_ibd_stalling.py

@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-# Copyright (c) 2022- The Bitcoin Core developers
+# Copyright (c) 2022-present The Bitcoin Core developers
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 """