[PATCH] Documentation: admin-guide: pm: cpufreq: fix sampling_rate example command

[wangxiaodong <wangxiaodong827546786@gmail.com>]

The example shell command for setting ondemand's sampling_rate wraps an
arithmetic expansion $((...)) in command-substitution backticks. The
arithmetic result is then executed as a command, which fails and writes
an empty value. Drop the surrounding backticks so the computed value is
passed to echo as intended.

Signed-off-by: wangxiaodong <wangxiaodong827546786@gmail.com>
---
 Documentation/admin-guide/pm/cpufreq.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Documentation/admin-guide/pm/cpufreq.rst b/Documentation/admin-guide/pm/cpufreq.rst
index 8831cface585..34baf20cc202 100644
--- a/Documentation/admin-guide/pm/cpufreq.rst
+++ b/Documentation/admin-guide/pm/cpufreq.rst
@@ -497,7 +497,7 @@ This governor exposes the following tunables:
 	represented by it to be 1.5 times as high as the transition latency
 	(the default)::
 
-	# echo `$(($(cat cpuinfo_transition_latency) * 3 / 2))` > ondemand/sampling_rate
+	# echo $(($(cat cpuinfo_transition_latency) * 3 / 2)) > ondemand/sampling_rate
 
 ``up_threshold``
 	If the estimated CPU load is above this value (in percent), the governor
-- 
2.43.0