Merge #1589

1589: Fix documentation formating for pipe2 r=asomers a=rusty-snake



Co-authored-by: rusty-snake <41237666+rusty-snake@users.noreply.github.com>

Author: bors[bot]

src/unistd.rs

@@ -1075,10 +1075,10 @@ pub fn pipe() -> std::result::Result<(RawFd, RawFd), Error> {
 /// The following flags are supported, and will be set atomically as the pipe is
 /// created:
 ///
-/// `O_CLOEXEC`:    Set the close-on-exec flag for the new file descriptors.
-#[cfg_attr(target_os = "linux", doc = "`O_DIRECT`: Create a pipe that performs I/O in \"packet\" mode.  ")]
-#[cfg_attr(target_os = "netbsd", doc = "`O_NOSIGPIPE`: Return `EPIPE` instead of raising `SIGPIPE`.  ")]
-/// `O_NONBLOCK`:   Set the non-blocking flag for the ends of the pipe.
+/// - `O_CLOEXEC`:    Set the close-on-exec flag for the new file descriptors.
+#[cfg_attr(target_os = "linux", doc = "- `O_DIRECT`: Create a pipe that performs I/O in \"packet\" mode.")]
+#[cfg_attr(target_os = "netbsd", doc = "- `O_NOSIGPIPE`: Return `EPIPE` instead of raising `SIGPIPE`.")]
+/// - `O_NONBLOCK`:   Set the non-blocking flag for the ends of the pipe.
 ///
 /// See also [pipe(2)](https://man7.org/linux/man-pages/man2/pipe.2.html)
 #[cfg(any(target_os = "android",