Fix comment

Author: tiif

tests/pass-dep/libc/libc-epoll.rs

@@ -537,7 +537,7 @@ fn test_epoll_lost_events() {
     assert!(check_epoll_wait::<1>(epfd, &[(expected_event1, expected_value1)]));
 }
 
-// This is testing if closing an fd that is already in ready_list will cause an empty entry in
+// This is testing if closing an fd that is already in ready list will cause an empty entry in
 // returned notification.
 // Related discussion in https://github.com/rust-lang/miri/pull/3818#discussion_r1720679440.
 fn test_ready_list_fetching_logic() {
@@ -550,15 +550,15 @@ fn test_ready_list_fetching_logic() {
     let fd0 = unsafe { libc::eventfd(0, flags) };
     let fd1 = unsafe { libc::eventfd(0, flags) };
 
-    // Register both fd to the same epoll instance. At this point, both of them is in ready list.
+    // Register both fd to the same epoll instance. At this point, both of them are on the ready list.
     let mut ev = libc::epoll_event { events: EPOLL_IN_OUT_ET, u64: fd0 as u64 };
     let res = unsafe { libc::epoll_ctl(epfd, libc::EPOLL_CTL_ADD, fd0, &mut ev) };
     assert_ne!(res, -1);
     let mut ev = libc::epoll_event { events: EPOLL_IN_OUT_ET, u64: fd1 as u64 };
     let res = unsafe { libc::epoll_ctl(epfd, libc::EPOLL_CTL_ADD, fd1, &mut ev) };
     assert_ne!(res, -1);
 
-    // Close fd0. So the first entry in the ready list will be empty.
+    // Close fd0 so the first entry in the ready list will be empty.
     let res = unsafe { libc::close(fd0) };
     assert_eq!(res, 0);