Raise copyright years

diff --git a/zk.zsh b/zk.zsh
index f5c88ef59e08026290d99d17c44ef64c887bd5ad..a9b63e7a0b8b67efa6cb8dd4b4695bb5967cb0f4 100755 (executable)
--- a/zk.zsh
+++ b/zk.zsh
@@ -1,6 +1,6 @@
 #!/usr/bin/env zsh
 # zk.zsh -- zettelkästen/wiki/static website helper/generator
-# Copyright (C) 2022 Sergey Matveev <stargrave@stargrave.org>
+# Copyright (C) 2022-2023 Sergey Matveev <stargrave@stargrave.org>
 
 set -e
 ZK_VERSION=ZKZSH1