manuals: Audit/bump dates for last content change

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Alexander Ziaee <ziaee@FreeBSD.org>
Closes #17676

man/man1/arcstat.1

@@ -13,7 +13,7 @@
 .\" Copyright (c) 2015 by Delphix. All rights reserved.
 .\" Copyright (c) 2020 by AJ Jordan. All rights reserved.
 .\"
-.Dd December 23, 2022
+.Dd September 19, 2024
 .Dt ARCSTAT 1
 .Os
 .

man/man1/cstyle.1

@@ -21,7 +21,7 @@
 .\"
 .\" CDDL HEADER END
 .\"
-.Dd May 26, 2021
+.Dd April 4, 2022
 .Dt CSTYLE 1
 .Os
 .

man/man1/zhack.1

@@ -23,7 +23,7 @@
 .\"
 .\" lint-ok: WARNING: sections out of conventional order: Sh SYNOPSIS
 .\"
-.Dd May 26, 2021
+.Dd May 3, 2023
 .Dt ZHACK 1
 .Os
 .

man/man1/ztest.1

@@ -24,7 +24,7 @@
 .\" reserved.
 .\" Copyright (c) 2017, Intel Corporation.
 .\"
-.Dd May 26, 2021
+.Dd July 12, 2025
 .Dt ZTEST 1
 .Os
 .