getdents.2: Tweaks to Petr Vorel's patch

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

man2/getdents.2

@@ -40,8 +40,9 @@ getdents, getdents64 \- get directory entries
 .fi
 .PP
 .IR Note :
-There is no glibc wrapper for getdents().
-Wrapper for getdents64() was added in glibc 2.30; see NOTES.
+There is no glibc wrapper for
+.BR getdents ();
+see NOTES.
 .SH DESCRIPTION
 These are not the interfaces you are interested in.
 Look at
@@ -204,18 +205,26 @@ File descriptor does not refer to a directory.
 SVr4.
 .\" SVr4 documents additional ENOLINK, EIO error conditions.
 .SH NOTES
-Library support for getdents64() was added in glibc 2.30;
-there is no glibc wrapper for getdents();
-call getdents() (or getdents64() on earlier versions) requires using
+Library support for
+.BR getdents64 ()
+was added in glibc 2.30;
+there is no glibc wrapper for
+.BR getdents ().
+Calling
+.BR getdents ()
+(or
+.BR getdents64 ()
+on earlier glibc versions) requires the use of
 .BR syscall (2).
 In that case you will need to define the
 .I linux_dirent
 or
 .I linux_dirent64
 structure yourself.
-However, you probably want to use
+.PP
+Probably, you probably want to use
 .BR readdir (3)
-instead.
+instead of these system calls.
 .PP
 These calls supersede
 .BR readdir (2).