docs: admin-guide: fix stress-ng command examples

The workload tracing guide includes stress-ng command examples with a
stray "command." word at the end. This makes the examples invalid if they
are copied and run directly.

Remove the stray word from the stress-ng example. Also use "--" in the
perf record example to clearly separate perf record options from the
workload command being recorded.

Signed-off-by: Cheng-Han Wu <hank20010209@gmail.com>
Reviewed-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260503101429.254394-3-hank20010209@gmail.com>

0 files changed, 0 insertions, 0 deletions