test: fix statx comment

Signed-off-by: William Dauchy <wdauchy@gmail.com>
diff --git a/test/statx.c b/test/statx.c
index 00abf0d..a1d97b2 100644
--- a/test/statx.c
+++ b/test/statx.c
@@ -1,5 +1,5 @@
 /*
- * Description: run various openat(2) tests
+ * Description: run various statx(2) tests
  *
  */
 #include <errno.h>