Use write_all instead of write_line

src/libstd/macros.rs

@@ -130,14 +130,14 @@ macro_rules! println {
 ///
 /// fn write_to_file_using_try() -> Result<(), io::Error> {
 ///     let mut file = try!(File::create("my_best_friends.txt"));
-///     try!(file.write_line("This is a list of my best friends."));
+///     try!(file.write_all(b"This is a list of my best friends."));
 ///     println!("I wrote to the file");
 ///     Ok()
 /// }
 /// // This is equivalent to:
 /// fn write_to_file_using_match() -> Result<(), io::Error> {
 ///     let mut file = try!(File::create("my_best_friends.txt"));
-///     match file.write_line("This is a list of my best friends.") {
+///     match file.write_all(b"This is a list of my best friends.") {
 ///       Ok(_) => (),
 ///       Err(e) => return Err(e),
 ///     }