[PATCH v2] selftests/Makefile: Add missed closing `"` in comment

[SeongJae Park]

A comment for make command usage in `selftets/Makefile` has opening `"`
but no closing `"`.  This commit adds the missed `"` in the comment.

Signed-off-by: SeongJae Park <sj38.park@xxxxxxxxx>
---
 tools/testing/selftests/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile
index d8593f1251ec..395ab296c084 100644
--- a/tools/testing/selftests/Makefile
+++ b/tools/testing/selftests/Makefile
@@ -39,7 +39,7 @@ TARGETS += x86
 TARGETS += zram
 #Please keep the TARGETS list alphabetically sorted
 # Run "make quicktest=1 run_tests" or
-# "make quicktest=1 kselftest from top level Makefile
+# "make quicktest=1 kselftest" from top level Makefile
 
 TARGETS_HOTPLUG = cpu-hotplug
 TARGETS_HOTPLUG += memory-hotplug
-- 
2.12.0