cmd: rename arcstat to zarcstat

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Colm Buckley <colm@tuatha.org>
Signed-off-by: Shengqi Chen <harry-chen@outlook.com>
Closes #16357
Closes #17712

man/Makefile.am

@@ -2,7 +2,7 @@ dist_noinst_man_MANS = \
 	%D%/man1/cstyle.1
 
 dist_man_MANS = \
-	%D%/man1/arcstat.1 \
+	%D%/man1/zarcstat.1 \
 	%D%/man1/raidz_test.1 \
 	%D%/man1/test-runner.1 \
 	%D%/man1/zhack.1 \

man/man1/zarcstat.1

@@ -14,11 +14,11 @@
 .\" Copyright (c) 2020 by AJ Jordan. All rights reserved.
 .\"
 .Dd September 19, 2024
-.Dt ARCSTAT 1
+.Dt ZARCSTAT 1
 .Os
 .
 .Sh NAME
-.Nm arcstat
+.Nm zarcstat
 .Nd report ZFS ARC and L2ARC statistics
 .Sh SYNOPSIS
 .Nm