Merge branch 'doc-monetary' into 'master'

update and add spec links for monetary

See merge request redox-os/relibc!830

src/header/monetary/mod.rs

@@ -1,5 +1,6 @@
-/// monetary.h implementation for Redox, following the POSIX standard.
-/// Following https://pubs.opengroup.org/onlinepubs/9799919799/basedefs/monetary.h.html
+/// `monetary.h` implementation.
+///
+/// See <https://pubs.opengroup.org/onlinepubs/9799919799/basedefs/monetary.h.html>.
 ///
 /// We should provide a strfmon() implementation that formats a monetary value,
 /// according to the current locale (TODO).

src/header/monetary/strfmon.rs

@@ -5,6 +5,8 @@ use alloc::string::{String, ToString};
 use core::{ffi::CStr, ptr, result, slice, str};
 use libm::{fabs, floor, pow, round, trunc};
 
+/// See <https://pubs.opengroup.org/onlinepubs/9799919799/functions/strfmon.html>.
+///
 /// The `strfmon()` function formats a monetary value according to the format string `format`
 /// and writes the result to the character array `s` of size `maxsize`.
 /// The format string can contain plain characters and format specifiers.