linux: unixbench: fix a typo on logfile name

Change-Id: Ie79eed2ad5f43c48f4d4c793b4c42501b1a01a75
Signed-off-by: Chase Qi <chase.qi@linaro.org>
(cherry picked from commit 12c291dba0d0d54127bec33d491a2268f59faf32)
diff --git a/automated/linux/unixbench/unixbench.sh b/automated/linux/unixbench/unixbench.sh
index 75af832..73b7c83 100755
--- a/automated/linux/unixbench/unixbench.sh
+++ b/automated/linux/unixbench/unixbench.sh
@@ -55,5 +55,5 @@
 # Run the number of CPUs copies.
 if [ "$(nproc)" -gt 1 ]; then
     ./Run -c "$(nproc)" | tee "${OUTPUT}/unixbench-multiple.txt"
-    log_parser "multiple" "${OUTPUT}/unixbench-single.txt"
+    log_parser "multiple" "${OUTPUT}/unixbench-multiple.txt"
 fi