sched_ext: selftests: Fix grammar in tests description

Fixed grammar for a few tests of sched_ext.

Signed-off-by: Devaansh Kumar <devaanshk840@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

Author: Devaansh-Kumar

tools/testing/selftests/sched_ext/init_enable_count.c

@@ -150,7 +150,7 @@ static enum scx_test_status run(void *ctx)
 
 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

@@ -43,7 +43,7 @@ static enum scx_test_status run(void *ctx)
 
 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)