sched_ext: selftests: Fix grammar in tests description

Fixed grammar for a few tests of sched_ext.

Signed-off-by: Devaansh Kumar <[e-mail]>
Signed-off-by: Tejun Heo <[e-mail]>

tools/testing/selftests/sched_ext/init_enable_count.c

···
 
 struct scx_test init_enable_count = {
 	.name = "init_enable_count",
-	.description = "Verify we do the correct amount of counting of init, "
+	.description = "Verify we correctly count the occurrences of init, "
 		       "enable, etc callbacks.",
 	.run = run,
 };

tools/testing/selftests/sched_ext/maybe_null.c

···
 
 struct scx_test maybe_null = {
 	.name = "maybe_null",
-	.description = "Verify if PTR_MAYBE_NULL work for .dispatch",
+	.description = "Verify if PTR_MAYBE_NULL works for .dispatch",
 	.run = run,
 };
 REGISTER_SCX_TEST(&maybe_null)