rename.2: Place list of renameat() flags in alphabetical order

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

man2/rename.2

@@ -184,14 +184,6 @@ The
 .I flags
 argument is a bit mask consisting of zero or more of the following flags:
 .TP
-.B RENAME_NOREPLACE
-Don't overwrite
-.IR newpath
-of the rename.
-Return an error if
-.IR newpath
-already exists.
-.TP
 .B RENAME_EXCHANGE
 Atomically exchange
 .IR oldpath
@@ -200,6 +192,14 @@ and
 Both pathnames must exist
 but may be of different types (e.g., one could be a non-empty directory
 and the other a symbolic link).
+.TP
+.B RENAME_NOREPLACE
+Don't overwrite
+.IR newpath
+of the rename.
+Return an error if
+.IR newpath
+already exists.
 .SH RETURN VALUE
 On success, zero is returned.
 On error, \-1 is returned, and